View source for Speed limits in the United States by jurisdiction

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{{Use mdy dates|date=August 2022}}
{{main|Speed limits in the United States}}
{{Very long|date=January 2021|words=19,000}}
[[File:US Speed Limits.svg|thumb|right|upright=1.3|Maximum speed limits in the U.S. states (or counties in the case of Iowa, Minnesota, and Texas)]]
[[File:Speed_limits_territories2.png|thumb|upright=1.3|Maximum speed limits in the [[Territories of the United States|U.S. territories]]]]
'''Speed limits in the United States''' vary depending on jurisdiction. Rural [[freeway]] speed limits of {{convert|70|to|80|mph|km/h|0|abbr=on}} are common in the [[Western United States]], while such highways are typically posted at {{convert|65|or|70|mph|km/h|0|abbr=on}} in the [[Eastern United States]]. States may also set separate speed limits for trucks and night travel along with minimum speed limits. The highest speed limit in the country is {{convert|85|mph|km/h|0|abbr=on}}, which is posted on a single stretch of tollway in exurban areas outside [[Austin, Texas]].<ref name=":0" /><ref>{{Cite web |last=Batheja |first=Aman |date=2012-10-25 |title=A Trip Down the Fastest Highway in America |url=https://www.texastribune.org/2012/10/25/trip-down-fastest-highway-america/ |access-date=2024-03-01 |website=The Texas Tribune |language=en}}</ref> The lowest maximum speed limit in the country is {{convert|30|mph}} in [[American Samoa]].<ref name="Asbar1"/>{{Refn|group=Note|[[Midway Atoll]] has a lower maximum speed limit, but it is not permanently-inhabited.}}
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==Alabama==
In [[Alabama]], it is illegal to drive at a speed that is not "reasonable and prudent" for the current conditions and hazards.<ref>{{cite web |url = http://alisondb.legislature.state.al.us/alison/codeofalabama/1975/32-5A-170.htm |title = Reasonable and prudent speed |website = Code of Alabama |at = sec. 32-5A-170 }}</ref> Drivers must also not drive so slowly that they impede the flow of traffic.<ref>{{cite web |url = http://alisondb.legislature.state.al.us/alison/codeofalabama/1975/32-5A-174.htm |title = Minimum speed regulation |website = Code of Alabama |at = sec. 32-5A-174 }}</ref> If the speed limit is not otherwise posted, it is:
*{{convert|30|mph|km/h|0|abbr=on}} in urban areas
*{{convert|35|mph|km/h|0|abbr=on}} on unpaved roads
*{{convert|40|mph|km/h|0|abbr=on}} on rural paved county roads
*{{convert|55|mph|km/h|0|abbr=on}} on other two-lane roads
*{{convert|65|mph|km/h|0|abbr=on}} on four-lane roads
*{{convert|70|mph|km/h|0|abbr=on}} on [[List of Interstate Highways in Alabama|Interstate Highways]]
Trucks carrying [[Dangerous goods|hazardous materials]] are not to exceed {{convert|55|mph|km/h}}.<ref>{{cite web |url = http://alisondb.legislature.state.al.us/alison/codeofalabama/1975/32-5A-171.htm |title = Maximum limits |website = Code of Alabama |at = sec. 32-5A-171 }}</ref>
==Alaska==
In [[Alaska]], many of the major highways carry a {{convert|65|mph|adj=on}} speed limit, including:
*A majority of the [[Parks Highway]] between [[Fairbanks, Alaska|Fairbanks]] and [[Willow, Alaska|Willow]] (excepting slower zones through [[Nenana, Alaska|Nenana]], [[Denali National Park|Denali Park]], [[Cantwell, Alaska|Cantwell]], and [[Healy, Alaska|Healy]])
*Most of the [[Richardson Highway]] between [[Valdez, Alaska|Valdez]] and [[North Pole, Alaska|North Pole]]
*On the [[Glenn Highway]], the {{convert|35|mi|adj=on}} freeway between [[Wasilla, Alaska|Wasilla]] and [[Anchorage, Alaska|Anchorage]], and most of the {{convert|100|mi|km}} west of Glennallen
*The [[Seward Highway]] in Anchorage between 36th Avenue and Rabbit Creek Road, and other non-freeway parts of the [[Seward Highway]] south of Bird Point
*Most of the [[Alaska Highway]] between the Canadian border and [[Delta Junction, Alaska|Delta Junction]]
The [[Minnesota Drive Expressway]] features a {{convert|60|mph|adj=on}} speed limit, as does the [[Richardson Highway]] between Fairbanks and North Pole.
Since the mid-1990s, Alaska's major highways have gradually been upgraded from 55&nbsp;mph to 60 or 65&nbsp;mph. However, several continue to carry the default {{convert|55|mph}} speed limit, including:
* The [[Sterling Highway]]
* The [[Alaska Route 1#Tok Cut-Off|Tok Cut-Off]]
* The [[Haines Highway]]
* Portions of the [[Parks Highway]] and [[Seward Highway]] designated "safety zones"
* Portions of the [[Elliott Highway]] and [[Steese Highway]] close to Fairbanks
Engineering studies are needed to define which road segments to post a speed limit higher than {{convert|55|mph}}.<ref name="Alaska Speed Limit Rules">{{cite web |title = Alaska Speed Limit Rules |url = http://www.safemotorist.com/Alaska/Roads/speed.aspx |publisher = Safe Motorist }}</ref>
[[File:Dalton_Highway_facing_south_from_Deadhorse.jpg|thumb|right|225px|[[Dalton Highway]] in Alaska]]
The [[Dalton Highway]] and parts of the Elliot Highway are 50&nbsp;mph.
Default speed limits in [[Alaska]] are:
*{{cvt|20|mph}} in alleys
*{{cvt|20|mph}} in a business district
*{{cvt|25|mph}} in a residential district
*{{cvt|55|mph}} on other roads
The speed limit when towing a mobile home is {{cvt|45|mph|km/h}}.<ref name="Alaska Speed Limit Rules"/>
==American Samoa==
[[File:075 Plants washed onto road at Post Office 9-29-09075.jpg|thumb|190px|[[List of highways in American Samoa|American Samoa Highway 001]] on [[Tutuila]]]]
The maximum speed limit in [[American Samoa]] is {{cvt|30|mph|0}}, with {{cvt|15|mph|0}} in residential areas.<ref name="Asbar1">http://www.asbar.org/index.php?option=com_content&view=category&id=583&Itemid=172 Asbar.org. Title 22 - Highways and Motor Vehicles. Chapter 03 - Rules of the Road. Retrieved July 7, 2019.</ref><ref>http://www.frommers.com/destinations/americansamoa/3038010002.html Frommer's - Planning a Trip in American Samoa. Retrieved July 7, 2019.</ref> The 30 miles per hour speed limit is the lowest maximum speed limit of any state or permanently inhabited territory. Although 30&nbsp;mph is the maximum speed limit, in most areas {{cvt|25|mph|0}} is the maximum speed limit.<ref>https://americansamoatourism.com/tutuila-island Americansamoatourism.com. Tutuila Island. Retrieved July 7, 2019.</ref>
==Arizona==
The default speed limit outside of "business or residential" districts in [[Arizona]] is {{cvt|65|mph|0}}; within those districts the default speed limit is {{cvt|25|mph|0}}. The default school zone speed limit is {{cvt|15|mph|0}}, while some may be {{cvt|25 to 35|mph}}. Exceeding these limits only in the best of driving conditions is considered ''prima facie'' evidence of speeding. Altered speed limits are not ''prima facie''.<ref name="State Legislature">Arizona Statutes Chapter 3 Article 6 28-701 [http://www.azleg.state.az.us/ArizonaRevisedStatutes.asp?Title=28|Arizona State Legislature]</ref>
The maximum speed limit on [[Interstate Highway]]s is {{cvt|75|mph|0}}. This limit may be applied outside of "[[Urban area#United States|urbanized areas]]". However, [[Interstate 10 in Arizona|Interstate 10]] near the [[California]] border is reduced to {{cvt|65|mph|0}}. Some portions of [[Interstate 15 in Arizona|Interstate 15]] have the same regulations due to sharp curves. There is an exception of urban highway in [[Casa Grande, Arizona|Casa Grande]], with a speed limit of {{cvt|75|mph|0}}, while other urban highways are capped at {{cvt|55 or 65|mph|0}}. Within "business or residential" districts, exceeding the speed limit by more than {{convert|20|mph}} is considered criminal. Within "urbanized areas", {{convert|55|mph}} speed limit citations are given for "waste of a finite resource". This exception only applies within a {{convert|10|mph|adj=on}} threshold. As long as the speed does not exceed {{cvt|65|mph|0}}, the infraction is not recorded as a [[traffic ticket|traffic violation]] for the purposes of a [[Point system (driving)|point system]].
Non-passenger vehicles in excess of {{convert|13|ST}}, or "vehicles drawing a pole trailer" weighing more than {{convert|3|ST}} may not exceed {{convert|65|mph}} unless signs are posted that allow such a speed. Yet this does not differ from the default speed limit, and has the practical effect of requiring extra consideration for posting a standard speed limit sign in excess of {{convert|65|mph}}.<ref>Arizona Statutes Chapter 3 Article 6 28-709 [http://www.azleg.state.az.us/ArizonaRevisedStatutes.asp?Title=28|Arizona State Legislature]</ref> A non-numeric minimum speed limit is incorporated with the basic speed rule in Arizona, which also prohibits speeds higher than would be "reasonable and prudent".<ref name="State Legislature"/>
Night speed limit signs are posted on some roads within [[Tucson, Arizona|Tucson]] city limits that do not have street lights. Examples: Fort Lowell Road from Oracle Road to Country Club Road, 22nd Street from [[Interstate 10 in Arizona|Interstate 10]] to Cherry Avenue.
==Arkansas==
Urban districts by default are posted at {{cvt|30|mph}}. Outside of the municipal limits, two-lane state and federal highways have a speed limit of {{cvt|55|mph}} unless otherwise posted, and 2 lane county roads have a speed limit of {{cvt|45|mph}} unless otherwise posted. In June 2015, the [[Arkansas Highway Commission]] authorized the [[Arkansas Highway and Transportation Department]] (AHTD) to raise the speed limit on undivided 4 and 5 lane roads from {{cvt|55 to 60|mph}}, and divided 4 lane roads from {{cvt|55 to 65|mph}}; these changes affect {{convert|285|miles}} of Arkansas highways.<ref>{{cite news |url = http://www.truckinginfo.com/news/story/2012/06/some-rural-arkansas-highways-getting-higher-speed-limits.aspx |title = Some Rural Arkansas Highways Getting Higher Speed Limits |publisher = Truckinginfo.com. |date = June 15, 2012 |access-date = March 19, 2017 }}</ref> Furthermore, AHTD has established freeway default speed limits. Along rural freeways the limit is {{cvt|75|mph}} while suburban freeways are posted at {{cvt|65|mph}}. School zone speed limits apply only when children are present, or when a lighted beacon is on if one is provided and such speed limits are set at {{cvt|25|mph}} unless otherwise posted. It is fairly common however that schools serving only higher grade levels will not have a school speed limit in rural areas or where such school sits more than {{convert|500|feet}} off of the highway or street.
On March 16, 2017, the Arkansas House introduced a bill that would allow the state highway commission to increase speed limits up to {{cvt|75|mph|0}} in rural interstate freeways, upon completion of a "traffic and engineering investigation" and sets rural non-divided highway speed limits to {{cvt|65|mph|0}}.<ref>{{cite news |publisher = Fort Smith/Fayetteville News |title = Proposed Bill Would Increase Speed Limits to 75 MPH |url = http://5newsonline.com/2017/03/17/proposed-bill-would-increase-interstate-speed-limits-to-75-mph/ |last = Meyers |first = Shawnya |date = March 17, 2017 |access-date = March 20, 2017 }}</ref><ref>{{cite news |publisher = 40/29 News |url = http://www.4029tv.com/article/house-bill-2057-proposes-to-increase-speed-limit-to-75-mph-on-some-highways/9159952 |last = Kee |first = Meghan |title = House Bill 2057 proposes to increase speed limit to 75 mph on some highways |date = March 20, 2017 |access-date = March 20, 2017 }}</ref><ref>{{cite magazine |magazine = US News |title = Arkansas House Wants to Increase Speed Limit to 75 Mph |date = March 17, 2017 |access-date = March 20, 2017 |url = https://www.usnews.com/news/best-states/arkansas/articles/2017-03-17/arkansas-house-wants-to-increase-speed-limit-to-75-mph }}</ref> This bill became law on April 7, 2017, however no highways were immediately given a 75&nbsp;mph limit.<ref>{{Cite web |url = http://www.arkleg.state.ar.us/assembly/2017/2017R/Pages/BillInformation.aspx?measureno=HB2057 |title = Bill Information |website = www.arkleg.state.ar.us |access-date = April 14, 2017 }}</ref>
On April 8, 2019, Act 784 was approved which raises the speed limit to 75&nbsp;mph / 70&nbsp;mph for trucks weighing more than {{cvt|26,000|lbs|t}} on all rural freeways effective July 1, 2020. The new law strikes the requirement for the Highway Commission to first conduct a traffic study before raising the limit; instead a study will be necessary for the Highway Commission to justify lowering the speed limit.<ref>{{cite web |title=An Act To Amend The Law Concerning Maximum Speed Limits |url=http://www.arkleg.state.ar.us/assembly/2019/2019R/Acts/Act784.pdf |website=[[Arkansas General Assembly]] |access-date=7 July 2023 |archive-url=https://web.archive.org/web/20190726173757/http://www.arkleg.state.ar.us/assembly/2019/2019R/Acts/Act784.pdf |archive-date=July 26, 2019 |language=en |date=Mar 28, 2019}}</ref>
As of August 5, 2020, new signs are up indicating the speed limit increase from 70 to 75&nbsp;mph (70&nbsp;mph for trucks) on I-40 west of Little Rock to the Oklahoma border.
==California==
===Basic speed law===
[[California]]'s "Basic Speed Law",<ref>[http://leginfo.ca.gov/cgi-bin/displaycode?section=veh&group=22001-23000&file=22348-22366 section 22350-22351] {{Webarchive|url=https://web.archive.org/web/20140514201835/http://leginfo.ca.gov/cgi-bin/displaycode?section=veh&group=22001-23000&file=22348-22366 |date=May 14, 2014}}. Leginfo.ca.gov (March 1, 2001).</ref> part of the [[California Vehicle Code]], defines the maximum speed at which a car may travel as a "reasonable and prudent" speed, given road conditions. The reasonable speed may be lower than the posted speed limit in conditions such as gravel—thus limiting the [[Assured Clear Distance Ahead]] (ACDA).<ref>{{cite web |url = http://law.justia.com/cases/california/calapp2d/22/636.html |title = Riggs v. Gasser Motors, 22 Cal. App. 2d 636 |publisher = Official California Appellate Reports (2nd Series Vol. 22, p. 636) |date = September 25, 1937 |access-date = July 27, 2013 |quote = It is common knowledge that intersecting streets in cities present a continuing hazard, the degree of hazard depending upon the extent of the use of the intersecting streets and the surrounding circumstances or conditions of each intersection. Under such circumstances the basic [speed] law...is always governing. }} See [http://courts.ca.gov/opinions-slip.htm Official Reports Opinions Online]
</ref><ref>{{cite web |url = http://law.justia.com/cases/california/calapp2d/139/65.html |title = Leeper v. Nelson, 139 Cal. App. 2d 65 |publisher = Official California Appellate Reports (2nd Series Vol. 139, p. 65) |date = February 6, 1956 |access-date = July 27, 2013 |quote = The operator of an automobile is bound to anticipate that he may meet persons or vehicles at any point of the street, and he must in order to avoid a charge of negligence, keep a proper lookout for them and keep his machine under such control as will enable him to avoid a collision with another automobile driven with care and caution as a reasonably prudent person would do under similar conditions. }} See [http://law.justia.com/cases/california/calapp2d/91/142.html Huetter v. Andrews, 91 Cal. App. 2d 142], [http://www.lexisnexis.com/clients/CACourts/ Berlin v. Violett, 129 Cal.App. 337], [http://www.lexisnexis.com/clients/CACourts/ Reaugh v. Cudahy Packing Co., 189 Cal. 335 ], and [http://courts.ca.gov/opinions-slip.htm Official Reports Opinions Online]
</ref> Basic speed laws are statutized reinforcements of the centuries-old [[common law]] [[negligence]] doctrine as specifically applied to vehicular speed.<ref>{{cite web |url = http://www.lexisnexis.com/clients/CACourts/ |title = Reaugh v. Cudahy Packing Co., 189 Cal. 335 |publisher = Official California Reports, Vol. 189, p. 335, (California Supreme Court reporter) |date = July 27, 1922 |access-date = July 27, 2013 |quote = This is but a reiteration of the rule, in statutory form, which has always been in force without regard to a statutory promulgation to the effect that drivers or operators of vehicles, and more particularly motor vehicles, must be specially watchful in anticipation of the presence of others at places where other vehicles are constantly passing, and where men, women, and children are liable to be crossing, such as corners at the intersections of streets or other similar places or situations where people are likely to fail to observe an approaching automobile. }}</ref> California Vehicle Code section 22350 is typical; it states that "No person shall drive a vehicle upon a highway at a speed greater than is reasonable&nbsp;... and in no event at a speed which endangers the safety of persons or property".<ref>{{cite web |url = http://www.dmv.ca.gov/pubs/vctop/d11/vc22350.htm |title = California Vehicle Code section 22350: Basic Speed Law |quote = No person shall drive a vehicle upon a highway at a speed greater than is reasonable or prudent having due regard for weather, visibility, the traffic on, and the surface and width of, the highway, and in no event at a speed which endangers the safety of persons or property. |date = September 20, 1963 |access-date = April 25, 2010 |publisher = California Department of Motor Vehicles |archive-date = May 5, 2010 |archive-url = https://web.archive.org/web/20100505015126/http://www.dmv.ca.gov/pubs/vctop/d11/vc22350.htm |url-status = dead }}</ref>
Speed limits in California are mandated by statute to be set: (1) at or below the 85th [[percentile]] [[operating speed]];<ref>{{Cite web |url = http://www.dmv.ca.gov/pubs/vctop/d11/vc21400.htm |title = California Vehicle Code § 21400(b) |publisher = The State of California |access-date = July 28, 2013 |date = January 1, 2012 |quote = The Department of Transportation shall revise the [[California Manual on Uniform Traffic Control Devices]], as it read on January 1, 2012, to require the Department of Transportation or a local authority to round speed limits to the nearest five miles per hour of the 85th percentile of the free-flowing traffic. However, in cases in which the speed limit needs to be rounded up to the nearest five miles per hour increment of the 85th-percentile speed, the Department of Transportation or a local authority may decide to instead round down the speed limit to the lower five miles per hour increment, but then the Department of Transportation or a local authority shall not reduce the speed limit any further for any reason. }}</ref><ref>[https://mutcd.fhwa.dot.gov/htm/2009r1r2/part2/part2b.htm#section2B13 MUTCD Sections 2B.13-16] #12</ref>
as determined by a traffic and engineering survey<ref>{{cite web |url = http://www.dmv.ca.gov/pubs/vctop/d01/vc627.htm |title = CVC § 627 Traffic and Engineering Survey |publisher = CA DMV }}</ref>—this is the speed that no more than 15% of traffic exceeds; or (2) the prima facie limits mandated when certain criteria are met as described in the vehicle code. These criteria include school zone, alleyway, and residential area.<ref name="CA prima facie limits">{{Cite web |url = http://www.dmv.ca.gov/pubs/vctop/d11/vc22352.htm |title = California Vehicle Code § 22352 Prima Facie Speed Limits |publisher = The State of California |access-date = July 28, 2013 |date = January 1, 2001 }}</ref><ref>{{Cite web |url = http://www.dmv.ca.gov/pubs/vctop/d11/vc22349.htm |title = California Vehicle Code § 22349 Maximum Speed Limit |publisher = The State of California |access-date = July 28, 2013 |date = January 1, 2000 }}</ref><ref>{{Cite web |url = http://www.dmv.ca.gov/pubs/vctop/d11/vc22356.htm |title = California Vehicle Code § 22356 Increase of Freeway Speed Limit to 70 Miles Per Hour |publisher = The State of California |access-date = July 28, 2013 |date = January 7, 1996 }}</ref><ref>{{Cite web |url = http://www.dmv.ca.gov/pubs/vctop/d11/vc22348.htm |title = California Vehicle Code § 22348 Excessive Speed and Designated Lane Use |publisher = The State of California |access-date = July 28, 2013 |date = January 1, 2005 |archive-date = January 24, 2013 |archive-url = https://web.archive.org/web/20130124120745/http://www.dmv.ca.gov/pubs/vctop/d11/vc22348.htm |url-status = dead }}</ref><ref name="CA School zone">{{Cite web |url = http://www.dmv.ca.gov/pubs/vctop/d11/vc22358_4.htm |title = California Vehicle Code § 22358.4 Decrease of Local Limits Near Schools or Senior Centers |publisher = The State of California |access-date = July 28, 2013 |date = January 1, 2008 }}</ref>
If the 85th percentile operating speed as measured by a Traffic and Engineering Survey<ref>{{Cite web |url = http://www.dmv.ca.gov/pubs/vctop/d01/vc627.htm |title = Traffic and Engineering Survey }}</ref> exceeds the [[design speed]], compulsory legal protection is given to that speed—even if it is unsafe with regard to certain technical aspects such as [[Geometric design of roads#Sight distance|sight distance]]. This speed creep may continue until the 85th percentile operating speed is comparable to speed [[Traffic psychology|psychologically]] perceived as uncomfortably hazardous.<ref>{{Cite web |url = http://trb.org/publications/nchrp/nchrp_rpt_504.pdf |title = Design Speed, Operating Speed, and Posted Speed Practice |publisher = Transportation Research Board |page = 88 |year = 2003 |access-date = August 29, 2013 }}</ref>
The theory behind California's 85th percentile statute is that, as a policy, most of the electorate should be seen as lawful, and limits must be practical to enforce. However, there are some circumstances where motorists do not tend to process all the risks involved, and as a mass choose a poor 85th percentile speed. This rule in substance is a process for voting the speed limit by driving; and in contrast to delegating the speed limit to an engineering expert.{{#tag:ref|Public opposition to speed limits being set by an authority, often arise because such agency has been viewed as abusing its power—such as by arbitrary indiscretion or by creating "speed traps". Because an expert can theoretically calculate a safer speed limit, than the populace's vote by driving, it is beneficial that local governments preserve strong public trust with their integrity in speed regulation. See ''A Policy on Geometric Design of Highways and Streets,'' [[American Association of State Highway and Transportation Officials|AASHTO]], 4th Ed., 2001; {{ISBN|1-56051-156-7}} |group="Note" |name="Speed limit chosen by the people vs the expert"}}<ref>{{Cite web |url = https://safety.fhwa.dot.gov/uslimits/ |title = USLIMITS2 - Safety |website = [[Federal Highway Administration|Federal Highway Administration (FHWA)]] }}</ref>
The numerical limit set by [[California Department of Transportation|Caltrans]] [[traffic engineering (transportation)|engineers]] for speed limit signs, generally found on all non-[[limited access|controlled-access]] routes, is considered a presumptive maximum "reasonable and prudent" speed.
Many speed limit signs are identified as "maximum speed", usually when the limit is {{convert|55|mph|km/h|0|abbr=on}} or more. When the [[National Maximum Speed Law]] was enacted, California was forced to create a new legal [[speed limit#Signage|signage]] category, "Maximum Speed", to indicate to drivers that the [[Speed limit#Basic rule|Basic Speed Law]] did not apply for speeds over the federally mandated speed cap; rather, it would be a violation to exceed the fixed maximum speed indicated on the sign, regardless of whether the driver's speed could be considered "reasonable and prudent".
A driver can receive a [[traffic ticket|traffic citation]] for violating the [[Speed limit#Basic rule|Basic Speed Law]] even if their speed is below the "maximum speed limit" if road, weather, or traffic conditions make that speed unsafe. However, because the Basic Speed Law establishes ''prima facie'' limits, not absolute ones, they can also defend against a citation for speeding "by competent [[evidence]] that the speed in excess of said limits did not constitute a violation of the basic speed law at the time, place and under the conditions then existing", per section 22351(b) of the California Vehicle Code.<ref>[http://www.dmv.ca.gov/pubs/vctop/d11/vc22351.htm Speed Law Violations California Vehicle Code, section 22351(b)]. Dmv.ca.gov (May 22, 2008).</ref> Thus, a driver who operates over the speed limit, but less than the usual {{convert|65|mph|km/h|0|abbr=on|sigfig=03}} maximum speed ({{convert|55|mph|km/h|0|abbr=on|sigfig=01}} for two-lane undivided highways, isn't necessarily violating California's speed laws where the driver's speed was otherwise safe under the circumstances.<ref name="fytaw">{{cite book |title = Fight Your Ticket & Win in California |last = Brown |first = David W. |year = 2005 |edition = 11th |publisher = [[Nolo.com|Nolo]] |location = Berkeley, CA |isbn = 978-1-4133-0641-5 |chapter = Speed Violations and Radar |pages = 4/2 |url = https://books.google.com/books?id=5LsenQAACAAJ |via = Google Books }}</ref>
===Speed limits===
Rural freeways, such as parts of [[Interstate 5 in California|I-5]], [[Interstate 8|I-8]], [[Interstate 10 in California|I-10]], [[Interstate 15 in California|I-15]], [[Interstate 40 in California|I-40]], [[Interstate 205 (California)|I-205]], [[Interstate 215 (California)|I-215]], [[Interstate 505|I-505]], [[Interstate 580 (California)|I-580]], [[California State Route 14|CA 14]], [[California State Route 58|CA 58]], and [[California State Route 99|CA 99]] have {{cvt|70|mph|0}} speed limits. The highest speed limit on [[Interstate 80 in California|I-80]] is {{cvt|65|mph}} because it passes almost exclusively through urban and mountainous areas. However, the speed limit on the [[San Francisco–Oakland Bay Bridge]] and in [[San Francisco]] is only {{cvt|50|mph}}. In downtown Los Angeles, the maximum speed limit is {{convert|55|mph|km/h|0|abbr=on|sigfig=01}}. This includes the entire length of the [[Pasadena Freeway]] between [[Pasadena, California|Pasadena]] and downtown Los Angeles, and portions of the [[Hollywood Freeway|Hollywood]], [[Santa Ana Freeway|Santa Ana]], [[Santa Monica Freeway|Santa Monica]], and [[Harbor Freeway]]s. The default limit on two-lane roads is {{convert|55|mph|km/h|0|abbr=on|sigfig=01}}. Some two-lane roads can be {{convert|60|mph|km/h|0|abbr=on|sigfig=01}} for some locations in California. However, [[Caltrans]] or a local agency can post a speed of up to {{cvt|65|mph}} after an [[traffic engineering (transportation)|engineering study]].<ref>[http://www.leginfo.ca.gov/cgi-bin/waisgate?WAISdocID=9352382531+0+0+0&WAISaction=retrieve WAIS Document Retrieval]. Leginfo.ca.gov.</ref>
There is a {{cvt|55|mph}} speed limit for trucks with at least 3 axles and all vehicles while towing.
In California, the maximum speed in [[school zone]]s is {{cvt|15|or|25|mph|abbr=|round=|sigfig=2}}, but may only be in effect when children are present within that school zone.<ref name="CA prima facie limits"/><ref name="CA School zone"/>
==Colorado==
The maximum speed limit in [[Colorado]] is {{cvt|75|mph}} on rural Interstate highways and the toll road portion of [[Colorado State Highway 470|SH 470]] ([[E-470]]), although [[Interstate 70 in Colorado|Interstate 70]] in the Rocky Mountains has a {{cvt|65|mph}} limit because of steep grades and curves and a {{cvt|50|mph}} limit at the east and west ends of the [[Eisenhower Tunnel]]. The maximum speed limit on other rural highways is {{cvt|65|mph}}.
There are also basic prima facie speed limits in Colorado.<ref name="Establishing Realistic Speed Limits Brochure">http://www.coloradodot.info/library/Brochures/Establishing_Realistic_Speed_Limits_Brochure.pdf , CDOT Establishing Realistic Speed Limits Brochure.</ref>
* {{cvt|20|mph}} on narrow, winding mountain roads
* {{cvt|25|mph}} in any business district
* {{cvt|30|mph}} in any residential district
* {{cvt|40|mph}} on open mountain highways
===Night speed limits===
On certain stretches of rural highways, notably [[U.S. Route 160 in Colorado|US 160]] between [[Durango, Colorado|Durango]] and [[Pagosa Springs, Colorado|Pagosa Springs]] and [[U.S. Route 550 in Colorado|US 550]] between Durango and [[Silverton, Colorado|Silverton]], nighttime speed limits are in effect during peak migratory periods for area wildlife. Speeding fines are doubled when nighttime speed limits are in effect.
==Connecticut==
Speed limits in [[Connecticut]] are normally {{cvt|65|mph}} on rural freeways; up to {{convert|55|mph|km/h|0|abbr=on}} on rural divided and up to {{cvt|50|mph}} on rural undivided highways. In urban areas speed limits vary from {{cvt|25|mph}} on residential streets and central business districts, {{cvt|30 to(-) 40|mph||abbr=|0}} on arterial roadways, and from {{cvt|45 to(-) 55|mph||abbr=|0}} on urban freeways. [[Limited-access]] [[divided highway]]s have a minimum speed of {{cvt|40|mph|0}},<ref>[http://www.cga.ct.gov/2005/pub/Chap248.htm#Sec14-220.htm Connecticut General Statutes §14–220] {{webarchive|url=https://web.archive.org/web/20110928163416/http://www.cga.ct.gov/2005/pub/Chap248.htm#Sec14-220.htm |date=September 28, 2011}}</ref> but this is not always posted, and is rarely enforced. Connecticut was among the last states to raise its maximum speed limit from {{convert|55|mph|km/h|0|abbr=on|sigfig=01}} originally established by the [[National Maximum Speed Law]] in 1974. The statewide maximum speed limit was increased from {{cvt|55|mph|0}} to {{cvt|65|mph}} on October 1, 1998, making Connecticut the last state in the continental United States to raise its speed limit above {{convert|55|mph|km/h|0|abbr=on|sigfig=01}}.
Speed limits for all roads within Connecticut—including local streets—are established by the State Traffic Commission, an agency composed of members of the [[Connecticut Department of Motor Vehicles|Department of Motor Vehicles]] (CTDMV), the [[Connecticut Department of Emergency Services and Public Protection|Department of Emergency Services and Public Protection]] (DESPP), and the [[Connecticut Department of Transportation|Department of Transportation]] (CONNDOT).
The State Traffic Commission typically sets speed limits following engineering studies performed by CONNDOT. Data used in setting speed limits includes traffic volume vs. roadway capacity, design speed, road geometry, the spacing of intersections and/or interchanges, the number of driveways and curb cuts, and accident rates.
Municipalities are normally required to seek approval from the State Traffic Commission for changes to the posted speed limits on locally owned streets after appropriate engineering studies are performed.
Speeding fines are doubled in school zones when children are present, and construction areas when workers are present.
Prior to enactment of the National Speed Limit Law in 1974, Connecticut permitted a maximum speed limit of {{convert|70|mph|km/h|0|abbr=on|sigfig=01}} on rural freeways.<ref>{{Cite web |url = http://www.speed-limits.com/connecticut.htm |archive-url = https://web.archive.org/web/20161104002458/http://www.speed-limits.com/connecticut.htm |url-status = dead |archive-date = November 4, 2016 |title = Connecticut Speed Limit |date = November 4, 2016 |access-date = January 7, 2017 }}</ref>
On March 26, 2018, contractors started installing new speed limit signs on I-84 between the Waterbury/Cheshire line and the interchange with CT Route 9, increasing the speed limit to {{convert|65|mph|km/h|0|abbr=on|sigfig=3}}. This action follows a DOT study showing the 85th percentile speed of free flowing traffic on this segment averaged {{convert|77|mph|km/h|0|abbr=on|sigfig=3}}.
==Delaware==
In [[Delaware]], four roads carry a {{convert|65|mph|km/h|0|abbr=on}} speed limit: [[Interstate 95 in Delaware|Interstate 95]] from the [[Maryland]] line to the southern junction with I-495, [[Interstate 495 (Delaware)|Interstate 495]], [[U.S. Route 301 in Delaware|US 301]], and [[Delaware Route 1]] between the [[Puncheon Run Connector]] in [[Dover, Delaware|Dover]] and [[U.S. Route 13 in Delaware|US 13]] in [[Tybouts Corner, Delaware|Tybouts Corner]]. Delaware Route 1 between Trap Shooters Road and the Puncheon Run Connector in Dover and between US 13 and the I-95 and [[Delaware Route 7]] interchange, along with the Puncheon Run Connector, have a speed limit of {{convert|60|mph|km/h|0|abbr=on}}. The remainder of I-95 between the southern junction with I-495 and the [[Pennsylvania]] line is {{convert|55|mph|km/h|0|abbr=on}} while the freeway portion of [[Delaware Route 141]] and [[Interstate 295 (Delaware–Pennsylvania)|Interstate 295]] are {{convert|50|mph|km/h|0|abbr=on}}. Prior to the National Maximum Speed Law that went into effect nationwide, I-95 used to have a {{convert|60|mph|km/h|0|abbr=on}} speed limit except around Wilmington.<ref>{{cite web |title = Scrapbook 1969 - 1988 |publisher = Delaware Public Archives |url = http://archives.delaware.gov/exhibits/document/scrapbooks/turnpike3/scrapbook.pdf }}{{page needed|date=December 2015}}</ref> In May 2015, the state of Delaware increased the speed limit on Interstate 95 from {{convert|55|to|65|mph|km/h|0|abbr=on}} between the Maryland state line and the I-495 interchange.<ref>{{cite news |last = Montgomery |first = Jeff |title = Coming to Delaware's I-95: 65 mph speed limit(this occurred from May 18 to May 21, 2015) |work = The News Journal |location = Wilmington, DE |date = February 25, 2015 |url = http://www.delawareonline.com/story/news/traffic/2015/02/24/delaware-speeds/23953659/ |access-date = March 1, 2015 }}</ref> In January 2017, the speed limit on Delaware Route 1 between Trap Shooters Road and the Puncheon Run Connector in Dover was increased from {{convert|55|to|60|mph|km/h|0|abbr=on}} while the speed limit on the Puncheon Run Connector was increased from {{convert|50|to|60|mph|km/h|0|abbr=on}}.<ref>{{cite press release |title = TRAFFIC ALERT - State Route 1 and Puncheon Run Connector Speed Limit Increases |publisher = Delaware Department of Transportation |date = January 3, 2017 |url = http://www.deldot.gov/home/newsroom/release.shtml?id=6373 |access-date = January 3, 2017 }}</ref>
All rural two-lane state-owned roads have {{convert|50|mph|km/h|0|abbr=on}} speed limits, while all urban speed limits, regardless of location, are held at {{convert|25|mph|km/h|0|abbr=on}} for two-lane roads and up to {{convert|35|mph|km/h|0|abbr=on}} for four-lane roads. Four lane highways such as [[U.S. Route 13 in Delaware|US 13]], [[U.S. Route 113|US 113]], portions of [[U.S. Route 40 in Delaware|US 40]] near [[Bear, Delaware|Bear]] and [[Glasgow, Delaware|Glasgow]], and the at-grade portions of DE 1 are normally {{convert|55|mph|km/h|0|abbr=on}}.
[[School zone]]s have {{convert|20|mph|km/h|0|abbr=on}} speed limits.
Interstate 495, which forms a bypass around [[Wilmington, Delaware|Wilmington]], features [[variable speed limit]] signs for environmental purposes. These signs typically display a {{convert|65|mph|km/h|0|abbr=on}} speed limit, but this limit changes to {{convert|55|mph|km/h|0|abbr=on}} on days when [[air quality]] is a concern. The limit is also lowered during construction, weather conditions, and when accidents occur.
All neighborhoods and subdivisions in Delaware have a maximum speed limit of {{convert|25|mph|km/h|0|abbr=on}} as set by state law. Frequent [[advertising campaigns]] on in-state radio stations remind residents of this (as of January 2013).<ref>{{Cite web |url = https://www.delawarenewsline.com/2017/01/04/speed-limit-to-increase-on-state-route-1/ |title = Speed limit to increase on State Route 1 |website = Delaware Newsline |date = January 5, 2017 |access-date = February 1, 2020 }}</ref>
==District of Columbia==
The [[District of Columbia]] has a maximum speed limit of {{cvt|55|mph|0}}, although speed limits as low as {{cvt|40|mph|0}} can be posted, such as on the Eisenhower Freeway.<ref>District of Columbia Municipal Regulations Title 18 – Vehicle and Traffic (March 1997), chapter 22 "Moving Violations" http://os.dc.gov/os/cwp/view,a,1207,q,640048.asp {{Webarchive|url=https://web.archive.org/web/20120222054622/http://os.dc.gov/os/cwp/view,a,1207,q,640048.asp |date=February 22, 2012 }}<br /> http://os.dc.gov/os/frames.asp?doc=/os/lib/os/info/odai/title_18/chapter_22.pdf {{Webarchive|url=https://web.archive.org/web/20090325115516/http://os.dc.gov/os/frames.asp?doc=/os/lib/os/info/odai/title_18/chapter_22.pdf |date=March 25, 2009 }}</ref> There are no rural roads in the District of Columbia.
==Florida==
[[File:FloridaSpeedLimitNames.png|thumb|Maximum speed limits per county in Florida]]
Florida has a maximum speed limit of {{cvt|70|mph|0}}, found on [[freeway]]s, including rural [[Interstate Highway]]s, some urban freeways including [[Interstate 4|I-4]] in [[Lakeland, Florida|Lakeland]], [[Interstate 75 in Florida|I-75]] in [[Tampa, Florida|Tampa]] and [[Miami, Florida|Miami]] (where I-75 ends), [[Interstate 95 in Florida|I-95]] near [[Daytona Beach, Florida|Daytona Beach]] and from Military Trail to Florida State Route 706 in [[Palm Beach County, Florida|Palm Beach County]], portions of the [[Orlando, Florida|Orlando]] area toll roads such as [[Florida State Road 417|SR 417]] and [[Florida State Road 429|SR 429]], [[Florida's Turnpike]] through [[Port St Lucie]] and Orlando, [[Interstate 10 in Florida|I-10]] close to [[Tallahassee, Florida|Tallahassee]], and most other rural [[limited access]] [[toll road]]s such as the [[Suncoast Parkway]] and the [[Beachline Expressway]] and rural portions of Florida's Turnpike. It can also be found on a portion of US 301 known as the [[Starke Bypass]]. {{cvt|65|mph}} is typical on rural 4-lane highways (such as [[U.S. Route 19 in Florida|US 19]] north of [[St. Petersburg, Florida|St. Petersburg]], among other [[US Highways]]) as well as most other urban freeways and tollways. Rural two-lane roads typically have a speed limit of {{cvt|55|mph}} (the default limit for such roads), although [[FDOT]] is permitted to post {{cvt|60|mph}} on appropriately-suited highways. This is typically done on very rural state roads (such as [[Florida State Road 471|SR 471]]) and US Highways (such as [[U.S. Route 98 in Florida|US 98]] along most of the state's [[Florida Panhandle|panhandle]]).
Statutory speed limits in Florida are as follows:<ref name="FSS 316.183">[http://www.leg.state.fl.us/Statutes/index.cfm?App_mode=Display_Statute&Search_String=&URL=0300-0399/0316/Sections/0316.183.html Statutes & Constitution :View Statutes : Online Sunshine]. Leg.state.fl.us.</ref>
* {{cvt|30|mph}} within municipal districts
* {{cvt|55|mph}} for all other roadways
Florida typically does not post night speed limits, but there are a few exceptions. For the most part, these night time reduced speeds are located in [[wildlife preserve]]s for such [[endangered species]] as the [[Florida panther]] and the [[key deer]]. Most of the [[Tamiami Trail]] through the [[Big Cypress National Preserve]] has a {{cvt|45|mph}} night speed limit.<ref>{{cite web |url = http://www.sherpaguides.com/florida/everglades/tamiami_trail_miami.html |title = Tamiami Trail—Miami to the Western Everglades |access-date = August 13, 2008 }}</ref> On some stretches of road where the speed limit is reduced at night, the daytime speed limit sign is non-reflective, such that at night, only the night limit is visible.
Florida's minimum speed limit on Interstate Highways is {{cvt|50|mph}} in 70&nbsp;mph zones. In 55&nbsp;mph, and 65&nbsp;mph urban interstate zones, the minimum is {{cvt|40|mph}}. At one time, these minimum speeds required signage, but these limits have since been codified in state law; signs indicating these minimum speeds still exist, but now simply serve as a reminder.<ref name="FSS 316.183" /> Urban freeways with speed limits of 50&nbsp;mph typically do not have minimum speed limits, such as on [[Interstate 375 (Florida)|I-375]] in [[St. Petersburg, Florida|St. Petersburg]]. Additionally, the new [[Gandy Freeway]] in St Petersburg has a speed limit as low as {{cvt|45|mph}}.
Florida also does not impose lower truck speed limits. As such, all traffic is permitted to travel at the same speed.<ref name="Florida Motorist Information">{{cite web |title = Florida Motorist Information |url = http://www.motorists.org/chapters/florida |publisher = National Motorists Association }}</ref>
[[School zone]]s in Florida usually have {{cvt|10-20|mph}} limits. Most have flashing yellow lights activated during the times they are in effect as well as accompanying signs that post the times these reduced speed limits are effective. All are strictly enforced and carry an increased penalty for violations.
==Georgia==
[[File:GeorgiaSpeedLimitsMap.png|thumb|Maximum speed limits per county in Georgia.]]
Rural [[List of Interstate Highways in Georgia (U.S. state)|Interstate Highways]] are posted at {{cvt|70|mph|0}}. Until 2014, sections of Interstates passing through a municipality or metropolitan area with a population over fifty thousand were capped at {{cvt|55-65|mph}}. However, a new law has permitted urban interstates to now be posted as high as 70&nbsp;mph,<ref>{{cite news |date = May 29, 2014 |title = New Georgia laws could bump up urban speeds, limit left lane use |author = Keith Goble |work = Land Line |url = http://www.landlinemag.com/Story.aspx?StoryID=27097 }}</ref> and some have already reflected this change, such as [[Interstate 95 in Georgia|I-95]] through [[Brunswick, Georgia|Brunswick]], [[Interstate 85 in Georgia|I-85]] in [[Gwinnett County, Georgia|Gwinnett County]], [[Interstate 75 in Georgia|I-75]] in [[Macon, Georgia|Macon]], [[Valdosta, Georgia|Valdosta]], and [[Tifton, Georgia|Tifton]], and [[Interstate 185 in Georgia|I-185]] in [[Columbus, Georgia|Columbus]] . Urban interstates in the Peach State are at 65&nbsp;mph. Such as [[Interstate 285 in Georgia|I-285]] and [[Georgia State Route 400|SR 400]] in the [[Atlanta metropolitan area|Atlanta area]] was recently increased from {{cvt|55|mph}} to {{cvt|65|mph}} (with [[Variable speed limit]]s on the north portion). I-95 through suburban [[Savannah, Georgia|Savannah]] between exits 102 and 99, [[Interstate 16 in Georgia|I-16]], from the interchange with [[Interstate 75 in Georgia|I-75]] in central [[Macon, Georgia|Macon]] eastbound past Exit 2, and east of exit 157, with the interchange for I-95, is also at 65&nbsp;mph. Portions of [[Interstate 20 in Georgia|I-20]] in [[Atlanta]] are posted at {{cvt|60|mph}}. Most non-interstate freeways such as the [[Athens, Georgia|Athens]] perimeter highway, are posted at 65&nbsp;mph.
Four lane arterials and expressways can be posted as high as {{cvt|65|mph}}. However, [[John Forrest Dillon|Dillon's Rule]] enables counties outside municipalities to keep four-lane GRIP corridors at {{cvt|55|mph}}. However, in recent years, [[U.S. Route 1 in Georgia|US 1]] between Augusta and Wrens raised the speed limit to 65&nbsp;mph. Other rural four-lane highways with a 65&nbsp;mph include portions of [[Georgia State Route 540|SR 540]] west of [[Sandersville, Georgia|Sandersville]], [[U.S. Route 441 in Georgia|US 441]] between [[Milledgeville, Georgia|Milledgeville]] and north of [[Dublin, Georgia|Dublin]], [[U.S. Route 25 in Georgia|US 25]] between [[Augusta, Georgia|Augusta]] and [[Statesboro, Georgia|Statesboro]], [[Georgia State Route 88|SR 88]] between Sandersville, and [[Wrens, Georgia|Wrens]], [[Georgia State Route 16|SR 16]] between [[Griffin, Georgia|Griffin]] and I-75, much of [[U.S. Route 341 in Georgia|US 341]] between [[Brunswick, Georgia|Brunswick]] and I-75, and much of [[U.S. Route 82 in Georgia|US 82]] in South Georgia.{{citation needed|date=December 2015}}
Two lane state roads by default are posted at {{cvt|55|mph}}. County maintained roads will rarely have speed limits above {{cvt|55|mph}} in middle & south Georgia, {{cvt|45|mph}} in north Georgia. Both in the Atlanta area, [[Ronald Reagan Parkway]] is posted at {{cvt|50|mph}} as a county maintained freeway and [[Sugarloaf Parkway]] is posted at {{cvt|55|mph}} along its new eastern freeway portion.{{citation needed|date=December 2015}}
Inside the municipality, speed limits are generally posted at {{cvt|35|mph}} while it is {{cvt|25–30|mph}} in the downtown area.{{citation needed|date=December 2015}}
All roadways maintained by GDOT that are subject to speed limit reductions are given advanced notice with signage that says "SPEED ZONE AHEAD". Furthermore, GDOT has a policy of doing {{cvt|5-10|mph}} increments but never higher than 10&nbsp;mph.{{citation needed|date=December 2015}}
Georgia is one of few states with anti-speed trap laws passed in the late 1990s. Speed violations less than {{cvt|15|mph}} over the speed limit will have no points assessed.<ref>[http://www.dds.ga.gov/drivers/DLdata.aspx?con=1749471757&ty=dl Points and Points Reduction] {{Webarchive|url=https://web.archive.org/web/20140814060529/http://www.dds.ga.gov/drivers/DLdata.aspx?con=1749471757&ty=dl |date=August 14, 2014}}. Dds.ga.gov (October 4, 2012).</ref> Fines are not assessed for motorists going less than {{cvt|5|mph}} over the speed limit. In 2009, Georgia introduced the "Super Speeder" law, which adds an additional speeding fine (above base fine and court costs) of $200 for motorists convicted of traveling {{cvt|15|mph}} or more over the posted speed limit.
==Guam==
The maximum speed limit in [[Guam]] is {{convert|45|mph|km/h|0|abbr=on}}, with {{convert|35|-|45|mph|km/h|0|abbr=on}} in rural areas and {{cvt|25-35|mph|0}} in residential areas.<ref>http://www.justice.gov.gu/compileroflaws/GCA/16gca/16gc003.PDF {{Webarchive|url=https://web.archive.org/web/20090325115518/http://www.justice.gov.gu/compileroflaws/GCA/16gca/16gc003.PDF|date=March 25, 2009}} ''Justice.gov.gu.'' Retrieved January 8, 2018.</ref> On most major roads, {{cvt|35|mph}} is the maximum speed limit.<ref>https://www.ghsa.org/state-laws/states/guamh Ghsa.org. Guam. Retrieved July 7, 2019.</ref><ref>http://www.tumon.com/betterdrivers_ocd/pages/Survey_SectionII_Part2.htm Tumon.com. Driver’s Handbook - Department of Revenue and Taxation - Motor Vehicle Division (Territory of Guam). Retrieved July 7, 2019.</ref>
==Hawaii==
Hawaii was the last state to raise its maximum speed limit after the [[National Maximum Speed Law]] was repealed in 1995, and still has the lowest maximum speed limit of any state. In 2002, following public outcry after a controversial experiment with [[speed limit#Enforcement|speed enforcement]] using [[traffic enforcement camera]]s, the state [[Hawaii Department of Transportation|Department of Transportation]] raised the speed limit to {{cvt|60|mph|0}} on [[Interstate H-1]] between [[Kapolei, Hawaii|Kapolei]] and [[Waipahu, Hawaii|Waipahu]], and [[Interstate H-3]] between the [[Tetsuo Harano Tunnels]] and the junction with H-1.<ref>{{cite news |author = Rod Antone |title = State approves higher speed limits |url = http://starbulletin.com/2002/04/18/news/story5.html |newspaper = Honolulu Star-Bulletin |date = April 18, 2002 |access-date = August 13, 2014 |archive-date = October 26, 2007 |archive-url = https://web.archive.org/web/20071026013136/http://starbulletin.com/2002/04/18/news/story5.html |url-status = dead }}</ref> All other freeways, including [[Interstate H-2]], have a maximum speed limit of {{convert|55|mph|km/h|0|abbr=on|sigfig=01}}, with the limit dropping to {{convert|45|mph|km/h|0|abbr=on|sigfig=01}} in central [[Honolulu]]. Other highways generally have speed limits of {{convert|55|mph|km/h|0|abbr=on|sigfig=01}} and in many cases much less.<ref>[http://www.hawaiihighways.com/FAQs-page2.htm#speed-limit FAQs page 2]. Hawaii Highways.</ref> On July 6, 2016, Governor [[David Ige]] signed a bill to allow the speed limit on Saddle Road to increase from {{cvt|55 to 60|mph|km/h|abbr=|0}} (the limit was increased in the week of February 5, 2017).<ref>{{Cite web |url = http://hawaiitribune-herald.com/news/local-news/ige-ok-s-higher-speed-limit-saddle-road |title = Ige OK's higher speed limit for Saddle Road &#124; Hawaii Tribune-Herald |access-date = July 6, 2016 |archive-date = July 7, 2016 |archive-url = https://web.archive.org/web/20160707143855/http://hawaiitribune-herald.com/news/local-news/ige-ok-s-higher-speed-limit-saddle-road |url-status = dead }}</ref>
Hawaii has a minimum speed along much of [[Interstate H-1]] of only {{cvt|10|mph|0}} below the speed limit. The minimum speed is usually {{cvt|45|mph}} when the speed limit is {{cvt|55|mph|0}}, and {{convert|40|mph|km/h|0|abbr=on|sigfig=01}} when the speed limit is {{convert|50|mph|km/h|0|abbr=on|sigfig=01}}.
==Idaho==
The speed limit on a freeway in Idaho is generally {{cvt|80|mph|0}} in rural areas and {{cvt|65|mph}} in urban areas. Trucks are limited to {{cvt|70|mph|0}}. Generally single-lane rural roads have {{cvt|65|mph}} limits, and multi-lane rural roads have {{cvt|70|mph|0}} limits. Roads with traffic lights are posted at {{cvt|60|mph}} or below. The school zone speed limit in Idaho is {{cvt|20|mph}}.
Idaho senator [[Bart Davis]] brought SB 1284a to the [[Idaho House of Representatives|House of Representatives]] for discussion in early 2014. The bill passed the [[Idaho Senate|Senate]] on February 25 and was signed into law by Governor [[Butch Otter]] on March 18, 2014, which was set to raise the speed limit on rural interstates to {{cvt|80|mph|0}} on July 1, 2014, the same date [[Wyoming]] raised its speed limit. Days before the law was to go into effect, however, it was put on hold in order to allow a more thorough review of the effects of a raised speed limit.<ref name="New speed">{{cite web |title = 80 mph speed limit law delayed |url = http://www.kboi2.com/news/local/Idaho-Speed-Limit-264926731.html |publisher = KBOI |access-date = July 14, 2014 }}</ref> A vote on July 14, 2014, approved the {{cvt|80|mph|0}} increase on limited sections of interstates in the southern portions of Idaho. Studies began for other areas later of that summer.<ref name="80 in effect">{{cite news |title = Transportation Board OKs 80 Mph for Idaho Freeways |url = http://magicvalley.com/news/local/transportation-board-oks-mph-for-s-idaho-freeway-stretches-that/article_abe851ca-0b81-11e4-b6ef-001a4bcf887a.html |newspaper = Twin Falls Times-News |access-date = July 19, 2014 }}</ref>
The bill also would raise truck and two-lane highway speed limits to {{cvt|70|mph|0}}.<ref name="80 passes">{{cite news |title = 80 mph speed limit bill clears House panel |url = http://www.spokesman.com/blogs/boise/2014/mar/04/80-mph-speed-limit-bill-clears-house-panel/ |newspaper = The Spokesman Review |access-date = March 4, 2014 }}</ref> As of July 24, 2014, the new {{cvt|80|mph|0}} signs are up on rural Idaho Interstates.<ref>{{cite news |title = Speed limit now 80 mph on some Idaho interstates |publisher = KTVB-TV |location = Boise, ID |date = July 24, 2014 |url = http://www.ktvb.com/story/news/local/2014/07/24/speed-limit-increases/13103293/ |access-date = July 25, 2014 }}</ref>
On March 22, 2017, the speed limit on a four-lane, divided stretch of [[U.S. Route 20 in Idaho|US 20]] between [[Idaho Falls, Idaho|Idaho Falls]] and [[Ashton, Idaho|Ashton]] was raised from {{cvt|65|mph}} to {{cvt|70|mph|0}}.<ref>{{cite news |publisher = Post Register |url = http://www.postregister.com/articles/news-daily-email-todays-headlines/2017/03/20/speed-limit-raises-70-mph-us-20-stretch# |last = Johnson |first = Lindsey |title = Speed limit raises to 70 mph on U.S. 20 stretch |date = March 20, 2017 |access-date = March 20, 2017 }}</ref><ref>{{cite news |publisher = Clearwater Tribune |url = http://www.clearwatertribune.com/news/online_only_news/speed-limit-on-section-of-u-s-increases-to-mph/article_b1a93c8a-0d92-11e7-adc7-27412fd5c40e.html |title = Speed limit on section of U.S. 20 increases Wednesday |date = March 20, 2017 |access-date = March 20, 2017 }}</ref><ref>{{cite news |url = http://www.localnews8.com/news/speed-limit-changes/404486981 |publisher = Local News 8 |title = ITD changing Hwy. 20 speed limit this week |last = Kassahun |first = Pheben |date = March 20, 2017 |access-date = March 20, 2017 }}</ref>
Prior to the national reduction in January 1974 to {{cvt|55|mph}}, Idaho's speed limit was {{cvt|70|mph|0}} for interstates and {{cvt|60|mph}} on other highways.<ref name=iddec>{{cite news |url = https://news.google.com/newspapers?id=VahfAAAAIBAJ&sjid=dzIMAAAAIBAJ&pg=3748%2C689295 |work = Lewiston Morning Tribune |location = (Idaho) |agency = Associated Press |title = Idaho declares speed limit of 55 |date = January 4, 1974 |page = 7 |via = Google News Archive }}</ref>
==Illinois==
[[Interstate Highway]]s in [[Illinois]] are usually posted with both minimum and maximum speed limits, except in some urban areas, particularly Chicago. The standard speed limit is 70&nbsp;mph for rural freeways, a 45&nbsp;mph minimum speed limit, 65&nbsp;mph for other 4 lane divided highways, and 55&nbsp;mph for all other highways. Urban freeway/interstate speed limits can range from as low as 45&nbsp;mph in downtown Chicago, where all the major interstates merge, to as high as 70&nbsp;mph in the outer portions of the Chicago and East St. Louis metro areas, and in some smaller cities. All the expressways leading directly out of downtown Chicago, which are [[Dan Ryan Expressway|The Dan Ryan Expressway]], [[Interstate 55 in Illinois|The Stevenson Expressway]], [[Interstate 290 (Illinois)|The Eisenhower Expressway]], and [[Kennedy Expressway|The Kennedy Expressway]], have a 55&nbsp;mph speed limit. Other expressways that branch off of the main ones leaving downtown, such as [[Interstate 94 in Illinois|The Edens Expressway]] and [[Interstate 94 in Illinois|The Bishop Ford Expressway]], also carry a 55&nbsp;mph limit. [[Interstate 90 in Illinois|The Chicago Skyway]] does carry a 55&nbsp;mph limit, but the tolled portion is signed at 45&nbsp;mph. [[Lake Shore Drive]] carries a 40&nbsp;mph speed limit from its northern terminus to E 31st Street, and from there to the end of the expressway, the speed limit is 45&nbsp;mph. Some interstates in small cities (e.g. I-55/74 through Bloomington-Normal, I-39/90 through the Rockford area, I-57 through Champaign-Urbana) do not have reduced speed limits, and stretches of I-90 and I-355 in the Chicago suburbs are also signed at 70&nbsp;mph. Most freeways and interstates in [[Cook County, Illinois|Cook]], [[DuPage County, Illinois|DuPage]], and [[Lake County, Illinois|Lake]] Counties, and some interstates and freeways in [[Will County, Illinois|Will County]] maintain a 55-60&nbsp;mph speed limit.<ref>{{cite web |title = Public Act 098-1126 |publisher = Illinois General Assembly |url = http://www.ilga.gov/legislation/publicacts/fulltext.asp?Name=098-1126 |date = January 1, 2015 }}</ref> Due to the high population density, the only freeways in Cook County that exceed a speed limit of 60&nbsp;mph are [[Interstate 57 in Illinois|I-57]] at the southern edge of the county, part of [[Interstate 80 in Illinois|I-80]] between Central Ave and Harlem Ave, [[Interstate 90 in Illinois|I-90]] west of Mt. Prospect Rd., and the southern segment of [[Interstate 355|I-355]], which passes through Cook County briefly before crossing into Will County to both the north and south. As of January 2010, a reduced speed limit posted in a construction zone must be obeyed 24 hours a day, regardless of whether workers are present.<ref>IL DOT Fact Sheet. http://www.dot.state.il.us/safetyEng/FactSheet-Rev-3-29-2010-Final1.pdf</ref>
As of March 27, 2018, the speed limit on I-90 from Randall Rd. in Elgin to Mt. Prospect Rd. in Des Plaines has been increased to 70&nbsp;mph, and from Mt. Prospect Rd. to the beginning of the Kennedy Expressway, it has been increased to 60&nbsp;mph.<ref>{{cite web |last1 = Wisniewski |first1 = Mary |title = Tollway increases speed limit to 70 mph on I-90 in northwest suburbs |url = http://www.chicagotribune.com/news/ct-met-speed-limits-tollway-20180403-story.html |website = Chicago Tribune |date = April 4, 2018 |access-date = June 17, 2018 }}</ref> I-290 is posted at 60&nbsp;mph for a few miles near Schaumburg, from IL-72 down to shortly before the I-355 exit.
==Indiana==
{{unreferenced section|date=January 2018}}
In [[Indiana]] speed limits on [[Interstate Highway]]s are usually {{cvt|70|mph|0}} for cars and {{cvt|65|mph|0}} for trucks with a [[gross weight|gross vehicular weight (GVW)]] of {{convert|26000|lb}} or greater. In urban areas, it is generally {{cvt|55|mph|0}}, except stretches of [[Interstate 70 (Indiana)|Interstate 70]] in [[Indianapolis]] where it is {{cvt|50|mph|0}}. In suburban areas, it is {{cvt|65|mph|0}} for cars and {{cvt|60|mph|0}} for trucks. On [[Interstate 469]] in [[Fort Wayne]] (Indiana's 2nd largest city) the speed limit is still set at 70&nbsp;mph. In the Louisville metro, In Clark & Floyd County, I-65 & I-265 remain at 65 mph for all vehicles despite it being suburban. The [[Indiana Toll Road]] also carries a minimum speed limit of {{cvt|45|mph|0}} as part of its internal toll road regulations.
Most non-Interstate Highways are {{cvt|55|mph|0}}, but some rural four-lane [[divided highway]]s are set at {{cvt|60|mph|0}}. These limits often decrease to {{cvt|30|-|50|mph|0}} approaching urban areas, and within cities a speed limit of {{cvt|20|-|30|mph|0}} is not uncommon, though larger [[arterial road]]s within cities may reach as high as {{cvt|45|mph|0}}.
On February 6, 2012, the [[Indiana Toll Road]] was raised from the Illinois state line to mile marker 20 to {{cvt|70|mph|0}} after a major highway reconstruction project.
==Iowa==
In [[Iowa]], the majority of highways have a {{cvt|55|mph|adj=on|round=5}} speed limit. Rural Interstate Highways carry a {{cvt|70|mph|adj=on|round=5}} limit and a {{cvt|40|mph|adj=on|round=5}} minimum. Urban Interstate limits generally range from {{cvt|55|to|65|mph|round=5}}, but may be lower in areas. Four-lane roads may have a {{cvt|65|mph|adj=on|round=5}} limit. If the road is built to [[Interstate Highway standards|freeway standards]], such as [[U.S. Highway 20 in Iowa|US&nbsp;20]] between [[Interstate 35 in Iowa|I-35]] and [[Dubuque, Iowa|Dubuque]], it may have a minimum speed limit, but otherwise four-lane roads carry no minimum limit so slow-moving farm vehicles may use the roadway.
==Kansas==
After the National Maximum Speed Limit was repealed, [[Kansas]] raised its general interstate speed limit to {{convert|70|mph|km/h|0|abbr=on}}; a study found "no statistically significant increases in crash, fatal crash and fatality rates were noted during the after period on either rural or urban interstate highway networks. On the other hand, statistically significant increases in crash, fatal crash and fatality rates were observed on the 2-lane rural highway network.".<ref>[http://ntl.bts.gov/lib/11000/11100/11138/KSU983.pdf Text-i-ii-pages.PDF]. (PDF).</ref> In 2011 Governor [[Sam Brownback]] signed legislation raising Kansas' top speed limit to {{convert|75|mph|km/h|0|abbr=on}} on rural Interstates and limited access portions of U.S. Routes, effective July 1, 2011.<ref>{{cite news |title = Top Kansas Speed Limit Rising |date = April 20, 2011 |newspaper = The Wichita Eagle |url = http://www.kansas.com/2011/04/20/1815851/top-kansas-speed-limit-rising.html }}{{dead link|date=June 2016|bot=medic}}{{cbignore|bot=medic}}</ref> The [[Kansas Department of Transportation]] announced on June 21, 2011, that 807 miles of roadway, comprising the rural areas of I-70, I-35, I-135, the [[Kansas Turnpike]] and the freeway-improved sections of US-69 and US-81, will be raised to 75&nbsp;mph.<ref>{{cite press release |title = Kansas routes designated for 75 mph speed limit |date = June 21, 2011 |publisher = Kansas Department of Transportation |url = http://www.ksdot.org/PDF_Files/Kansas-routes-designated-for-75-mph-speed-limit.pdf }}</ref> Other four-lane, non-limited access divided highways have a speed limit of 70&nbsp;mph, with 65&nbsp;mph on two-lane undivided roads, and 55&nbsp;mph on township roads. Prior to the National Maximum Speed Limit, the speed limit on the Kansas Turnpike used to be {{convert|80|mph|km/h|0|abbr=on}}, but was reduced to 75&nbsp;mph on August 17, 1970. The minimum speed limit on Kansas Interstates is 40&nbsp;mph.
==Kentucky==
[[Kentucky]] generally has a 70&nbsp;mph speed limit on rural freeways as of 2007. The speed limit is reduced to 55 on multi-lane highways in some urban areas (I-71/[[Interstate 75 in Kentucky|75]] south of [[Cincinnati]], [[Interstate 64 in Kentucky|I-64]], [[Interstate 65 in Kentucky|I-65]], [[Interstate 71|I-71]] and [[Interstate 264 (Kentucky)|I-264]] in [[Louisville, Kentucky|Louisville]], and [[KY 4]] in Lexington. There are two 50&nbsp;mph areas in Louisville. One approaching the [[Sherman Minton Bridge]] crossing the [[Ohio River]] into [[Indiana]] on I-64, and one approaching the [[John F. Kennedy Memorial Bridge|Kennedy Bridge]] on I-65 towards [[Indiana]]. The Transportation Cabinet is now authorized to raise any multilane, divided rural highway up to 65 MPH based on speed and design studies. Anyone may request an increase by contacting their local Transportation Cabinet office and specifying the roadway to be raised. Two-lane, undivided highways are limited to 55&nbsp;mph. Points are not assessed for speeds less than 10&nbsp;mph over the speed limit only on limited access highways, or for tickets received by Kentucky licensed drivers out of state.<ref>{{Cite web |url = http://www.kentuckystatepolice.org/pdf/2011_ky_drivers_manual.pdf |title = Kentucky Driver Manual }}</ref>
==Louisiana==
Louisiana's highest speed limit is 75&nbsp;mph, found on 154 miles of [[Interstate 49]] in [[Saint Landry Parish|Saint Landry]], [[Avoyelles Parish|Avoyelles]], [[Evangeline Parish|Evangeline]], [[Rapides Parish|Rapides]], [[Natchitoches Parish|Natchitoches]], [[DeSoto Parish|DeSoto]] and [[Caddo Parish|Caddo]] parishes. The Caddo Parish 75 zone is split into two portions, from the DeSoto-Caddo Parish line to Louisiana Highway 526, and from Louisiana Highway 1 to the Arkansas state line. The 75 zone was established by the [[Louisiana Department of Transportation and Development]] in 2011 after a 2010 bill authorized the DOTD to implement 75 zones where proven to be safe.<ref>[http://theadvocate.com/news/340351-64/i-49-speed-limit-increased-to.html The Advocate: I-49 speed limit increased to 75 mph] Retrieved September 14, 2011.</ref><ref>[http://www.nola.com/newsflash/index.ssf/story/i-49-speed-limit-increased-to-75-mph/57952c5f3dbc4344b638be40f8e71c9b nola.com: Interstate 49 speed limit increased to 75 mph between central, north Louisiana] {{Webarchive|url=https://web.archive.org/web/20121019134309/http://www.nola.com/newsflash/index.ssf/story/i-49-speed-limit-increased-to-75-mph/57952c5f3dbc4344b638be40f8e71c9b |date=October 19, 2012}} Posted July 11, 2011; retrieved September 14, 2011.</ref><ref>[http://www.dotd.la.gov/pressreleases/release.aspx?key=1666 La. DOTD: DOTD announces speed limit increase along I-49 in DeSoto Parish] Retrieved April 13, 2011.</ref><ref>[http://www.dotd.la.gov/pressreleases/release.aspx?key=1669 La. DOTD: DOTD announces speed limit increase along I-49 in Avoyelles, Natchitoches and Rapides parishes] Retrieved September 14, 2011.</ref>
70&nbsp;mph is posted on Interstates [[Interstate 10 in Louisiana|10]], [[Interstate 12|12]], [[Interstate 20 in Louisiana|20]], [[Interstate 49 in Louisiana|49]], [[Interstate 55 in Louisiana|55]], [[Interstate 59 in Louisiana|59]], [[Interstate 220 (Louisiana)|220]], and [[Interstate 310 (Louisiana)|310]].
A speed limit of 60&nbsp;mph is posted on I-10 in [[Lake Charles, Louisiana|Lake Charles]], [[Baton Rouge, Louisiana|Baton Rouge]], and from [[LaPlace, Louisiana|LaPlace]] to [[New Orleans]], I-12 in Baton Rouge, I-20 in [[Shreveport, Louisiana|Shreveport]] and [[Monroe, Louisiana|Monroe]], I-49 in [[Alexandria, Louisiana|Alexandria]] and Shreveport, I-220 in Shreveport, [[U.S. Route 71|US 71]] and [[U.S. Route 167|US 167]] in [[Kingsville, Louisiana|Kingsville]], [[LA 3132]], and [[Interstate 110 (Louisiana)|I-110]], [[Interstate 210 (Louisiana)|I-210]], [[Interstate 510 (Louisiana)|I-510]], [[Interstate 610 (Louisiana)|I-610]], and [[Interstate 910 (Louisiana)|I-910]] (note: part of I-10 in Baton Rouge was raised to 70&nbsp;mph, and part of I-12 in Baton Rouge was also raised to 65&nbsp;mph).
Most two-lane highways in Louisiana have a maximum speed limit of 55&nbsp;mph.
In August 2003, [[Murphy J. Foster, Jr.|Governor Mike Foster]] announced speed and lane restrictions on trucks on the {{convert|18|mi|km}} stretch of I-10 known as the [[Atchafalaya Swamp Freeway]]. The restrictions lower the truck speed limit to 55&nbsp;mph and restrict them to the right lane for the entire length of the elevated freeway.<ref>{{Cite web |url = http://www.dps.state.la.us/tiger/lowerspdlimitsandlaneresttrucksI10.htm |title = Lower Speed Limits and Lane Restrictions for Trucks on I-10 over Atchafalaya Basin |date = December 10, 2006 |archive-url = https://web.archive.org/web/20061210110628/http://www.dps.state.la.us/tiger/lowerspdlimitsandlaneresttrucksI10.htm |archive-date = December 10, 2006 }}</ref>
===Other laws===
There are exceptions to the basic highway and speed laws<ref>http://www.nhtsa.gov/people/injury/enforce/speedlaws501/toc/laspeed.pdf {{Webarchive|url=https://web.archive.org/web/20140507042656/http://www.nhtsa.gov/people/injury/enforce/speedlaws501/toc/laspeed.pdf |date=May 7, 2014}} -Louisiana divided highway speed limit.</ref>
Divided highways in rural areas have a 65&nbsp;mph speed limits. Louisiana law R.S. 32:61(B) & 32:62(A) states;<blockquote>65 mph on other multi-lane divided highways which have partial or no control of access.</blockquote>
Louisiana operates under the reasonable and prudent basic law;<blockquote>No person shall drive a vehicle at a speed greater than is reasonable and prudent under the conditions and potential hazards then existing, having due regard for the traffic on, and the surface and width of, the highway, and the condition of the weather. R.S. 32:64(A)</blockquote>
A person, who is operating a motor vehicle on a multilane highway at less than the normal speed of traffic, shall drive in the right-hand lane then available for traffic. R.S. 32:71(B)(1)
==Maine==
Maine carries the highest speed limit on the East Coast, with [[Interstate 95 in Maine|Interstate 95]] carrying a {{convert|75|mph|km/h|0|abbr=on|sigfig=2}} limit between [[Old Town, Maine|Old Town]] and [[Houlton, Maine|Houlton]]. Sections of I-95 south of Old Town as well as half of [[Interstate 295 (Maine)|I-295]] carry {{convert|70|mph|km/h|0|abbr=on|sigfig=2}} limits, except for brief {{convert|50|to(-)|65|abbr=on|mph}} zones in more populated areas. The [[Saco, Maine|Saco]] stub [[Interstate 195 (Maine)|I-195]] is {{convert|60|mph|km/h|0|abbr=on|sigfig=1}}, and [[Interstate 395 (Maine)|I-395]] is {{convert|60|mph|km/h|0|abbr=on|sigfig=1}} in [[Bangor, Maine|Bangor]] and {{convert|65|mph|km/h|0|abbr=on|sigfig=3}} in [[Brewer, Maine|Brewer]].{{citation needed|date=August 2016}}
Default speed limits in Maine are:
*{{convert|15|mph|km/h|0|abbr=on|sigfig=1}} in a school zone within 30 minutes of the beginning or end of the school day or whenever/wherever children are present
*{{convert|20|mph|km/h|0|abbr=on|sigfig=1}} near an intersection "when the operator's view is obstructed", unless [[Right-of-way (property access)|right-of-way]] is given via signage
*{{convert|25|mph|km/h|0|abbr=on}} in business or residential districts, or other built-up areas
*{{convert|30|mph|km/h|0|abbr=on|sigfig=1}} on county roads
*{{convert|45|mph|km/h|0|abbr=on|sigfig=1}} on other roads
In Maine, [[School Bus|school buses]] may not exceed {{convert|45|mph|km/h|0|abbr=on|sigfig=1}} on roads with higher speed limits while transporting students. At other times, the limit is {{convert|55|mph|km/h|0|abbr=on|sigfig=1}}, unless on an [[Interstate highway]], in which case the posted limit applies.
Fines for speeding are at least $50 by law. Exceeding the speed limit by {{convert|30|mph|km/h|0|abbr=on|sigfig=01}} or more is considered a [[criminal offense]].
<ref>{{cite web |url = http://www.mainelegislature.org/legis/statutes/29-a/title29-asec2074.html |title = Title 29-A, §2074: Rates of speed |date = 1993–2009 |website = [[Maine Legislature]] Revised Statutes |publisher = Office of the Revisor of Statutes |access-date = August 28, 2016 }}</ref>
==Maryland==
The speed limit on [[Maryland]]'s Interstate Highways are posted by default at 65&nbsp;mph although 70&nbsp;mph limits can be posted after a traffic and engineering study. Effective October 1, 2015, the speed limit on [[Interstate 68|I-68]] is 70&nbsp;mph except for a seven-mile section around [[Cumberland, Maryland|Cumberland]]. Effective April 4, 2016, the speed limit on [[Interstate 70 in Maryland|I-70]] has been increased to 70&nbsp;mph from the [[Pennsylvania]] state line to [[Maryland Route 180|MD 180]] in [[Frederick County, Maryland|Frederick County]] and from [[Maryland Route 144|MD 144]] in Frederick County to [[U.S. Route 29 in Maryland|US 29]] in [[Howard County, Maryland|Howard County]].<ref name=wbal>{{cite news |title = Speed limit increases to 70 mph on parts of I-70 |publisher = WBAL-TV |location = Baltimore, MD |date = April 4, 2016 |url = http://www.wbaltv.com/news/speed-limit-increases-to-70-mph-on-parts-of-i70/38856414 |access-date = April 4, 2016 }}</ref> Maryland's urban freeways normally have speed limits of 55&nbsp;mph (like [[Interstate 495 (Capital Beltway)|I-495]]) or 60&nbsp;mph, although some stretches are signed for 65&nbsp;mph travel such as portions of [[Interstate 95 in Maryland|I-95]] and [[Interstate 97|I-97]] in and around the [[Baltimore]] suburbs, I-70 around Frederick, and I-81 around Hagerstown. I-70 around Hagerstown is posted at 70&nbsp;mph. More restrictive limits are found on [[Interstate 83|I-83]] south of [[North Avenue (Baltimore)|North Avenue]] when approaching [[downtown Baltimore]] and on I-68 through Cumberland, both sections being marked at 40&nbsp;mph.
Four lane non-interstates and non-freeways are posted at 55&nbsp;mph. This includes the expressway grade roadways like [[U.S. Route 50 in Maryland|US 50]] and [[U.S. Route 301 in Maryland|US 301]] east of the [[Chesapeake Bay Bridge|Bay Bridge]], [[U.S. Route 15 in Maryland|US 15]] north of Frederick to the Pennsylvania state line, [[Maryland Route 404|MD 404]] around [[Denton, Maryland|Denton]] and US 29 between I-495 and I-70. [[U.S. Route 340 in Maryland|US 340]] from [[Brunswick, Maryland|Brunswick]] to I-70 in Frederick however is posted as 65&nbsp;mph.
Two lane roads are generally posted at 50&nbsp;mph but there are a handful of routes posted at 55&nbsp;mph. It is more common to see 55&nbsp;mph on the [[Eastern Shore of Maryland|Eastern Shore]] and in Frederick and [[Carroll County, Maryland|Carroll]] counties than the [[Baltimore–Washington metropolitan area|Baltimore-Washington corridor]] and [[Western Maryland]]. Two lane routes that have a speed limit of 55&nbsp;mph enforce mandatory headlight use.
Urban and downtown speed limits are generally posted at 30&nbsp;mph.
==Massachusetts==
As prescribed by Massachusetts law,<ref>{{M.G.L.|90|17}}</ref> default speed limits are the following:
*{{convert|15|mph|km/h|0|abbr=on}} in the area of a vehicle (for example, an [[ice cream truck]]) that is selling merchandise and is displaying flashing amber lights
*{{convert|20|mph|km/h|0|abbr=on}} in a school zone when children are present
*{{convert|30|mph|km/h|0|abbr=on}} on a road in a "thickly settled" or business district for at least {{convert|1/8|mi|m}}
*{{convert|40|mph|km/h|0|abbr=on}} on a road outside of a "thickly settled" or business district for at least {{convert|1/4|mi|m}}
*{{convert|50|mph|km/h|0|abbr=on}} on a divided highway outside of a "thickly settled" or business district for at least {{convert|1/4|mi|m}}
State highways and other arterials are often posted at {{cvt|35 to(-) 40|mph}} in urban areas and {{cvt|45 to(-) 50|mph}} in rural areas. A select number of undivided roads are posted at {{cvt|55|mph}}. Divided highways are usually posted at {{cvt|45 to(-) 55|mph}} in rural areas as well as business districts. [[List of Interstate Highways in Massachusetts|Interstate highways]] and some non-Interstate [[freeway]]s in suburban and rural areas are posted at {{cvt|65|mph}}, but many non-Interstate highways are posted at {{cvt|55|mph}} such as [[U.S. Route 6 in Massachusetts|US 6]], [[Massachusetts Route 2|Route 2]], and [[Massachusetts Route 128|Route 128]], or {{cvt|60|mph}}, such as [[Massachusetts Route 3]] South of Boston, or {{cvt|65|mph}}, such as the freeway portion of [[U.S. Route 3 in Massachusetts|US 3]]. Urban freeways are often posted at {{cvt|55|mph}} and occasionally lower, but some rural freeways that pass through urban areas maintain their {{cvt|65|mph}} speed limit, such as the [[Massachusetts Turnpike]] through the [[Springfield, Massachusetts|Springfield]] and [[Worcester, Massachusetts|Worcester]] areas.<ref>{{cite map |last = Carr |first = John |title = Map of Massachusetts speed limits |url = https://www.mit.edu/~jfc/maps/speed/Speed-Limits.gif |format = GIF }}</ref>
A "thickly settled district" is an area where building structures such as residential and commercial are less than {{convert|200|ft|m}} apart for a distance of {{convert|1|mi|km}} or more. This can be subjective since a large part of eastern Massachusetts is built up with many different jurisdictions and different speed limits assigned.
==Michigan==
The maximum speed limit in [[Michigan]] is {{cvt|75|mph}}. Michigan uses a formula based on the number of driveways and streets, or on the 85th percentile of free-flowing traffic, and if none those methods are used a {{cvt|55|mph}} default applies.<ref>{{cite web |title = NMA Michigan |date = November 18, 2008 |url = http://blog.motorists.org/how-to-fight-a-michigan-speeding-ticket/ |publisher = National Motorist Association |access-date = July 18, 2011 }}</ref> In rural areas, speed limits are as follows:
* Freeway speeds for passenger vehicles range from {{cvt|70|mph|0}} to {{cvt|75|mph}}.
* Freeway speeds for trucks and military vehicles is {{cvt|65|mph}}.
* Non-freeway speeds for passenger vehicles and trucks range from {{cvt|55|mph}} to {{cvt|65|mph}}.
Freeways in Michigan are usually signed with both minimum and maximum speeds. By default, the freeway speed limit is {{cvt|70|mph|0}}, with a minimum speed of {{cvt|55|mph}} for all vehicles, despite a truck speed limit of {{cvt|65|mph}}—effectively permitting trucks only a {{cvt|10|mph}} range of legal speeds.<ref name=MI300.1949.IV>{{cite web |url = http://www.legislature.mi.gov/(S(s241gx553frlpfjo2guswzuf))/mileg.aspx?page=getObject&objectName=mcl-300-1949-VI-SPEED-RESTRICTIONS |title = Public Michigan Vehicle code: Speed Restrictions |date = November 9, 2006 |access-date = April 30, 2007 |work = Michigan Legislature }}</ref> The [[Mackinac Bridge]] has a speed limit of {{cvt|45|mph}} for passenger vehicles and {{cvt|20|mph}} for trucks, but can be as low as {{cvt|20|mph}} during high winds.<ref>{{cite web |title = Mother Nature vs. Mighty Mac: How does weather affect the bridge? |url = https://www.petoskeynews.com/gaylord/featured-ght/top-gallery/mother-nature-vs-mighty-mac-how-does-weather-affect-the/article_77533e02-b480-51ee-b01d-efc8ff34d27a.html |website = Petoskey News-Review |access-date = December 31, 2018 |language = en }}</ref> The [[Michigan Department of Transportation]] and the [[Michigan State Police]] may raise the speed limit to {{cvt|75|mph}} after it is deemed safe to do so.<ref name="mlive.com">{{Cite web |url = http://www.mlive.com/news/index.ssf/2016/06/state_house_approves_75_mph_sp.html |title = Michigan House approves 75 MPH speed limit hike |date = June 2, 2016 }}</ref> MDOT and the MSP announced on April 26, 2017, that the speed limit was increased to 75&nbsp;mph on several Michigan freeways, including [[Interstate 75 in Michigan|I-75]] from [[Bay City, Michigan|Bay City]] to [[Sault Ste. Marie, Michigan|Sault Ste. Marie]] (excluding the [[Mackinac Bridge]]), [[Interstate 69 in Michigan|I-69]] from Business Loop 69 in [[Clinton County, Michigan|Clinton County]] to I-94 in [[St. Clair County, Michigan|St. Clair County]] (excluding the section in and around [[Flint, Michigan|Flint]], which remains at {{cvt|70|mph|0}}), [[U.S. Route 127 in Michigan|US 127]] from I-69 in [[Clinton County, Michigan|Clinton County]] to I-75 in [[Crawford County, Michigan|Crawford County]] (excluding the 15-mile stretch between [[St. Johns, Michigan|St. Johns]] and [[Ithaca, Michigan|Ithaca]], which is not freeway standard), and [[U.S. Route 131|US 131]] from [[M-57 (Michigan highway)|M-57]] in [[Kent County, Michigan|Kent County]] to the end of the freeway north of [[Manton, Michigan|Manton]]. These increases commenced on May 1, 2017, and were completed by May 15, 2017. Speed limits in freeway work zones are statutorily limited to {{cvt|60|mph}} 24 hours per day. If workers are present (and not behind a barrier wall), drivers must slow to {{cvt|45|mph}} for the workers' safety.
For many years, trucks generally had a speed limit of {{cvt|60|mph}}, but this was increased to {{Convert|65|mph|km/h|0|abbr=on}} in 2017.<ref>{{Cite web |title = MDOT - Trucker Speed Limits |url = https://www.michigan.gov/mdot/0,4616,7-151-9625_56949-172587--,00.html#:~:text=The%20act%20amends%20the%20Michigan%20Vehicle%20Code,%20section,per%20hour.%20This%20amendatory%20act%20takes%20effect%20immediately. |access-date = May 31, 2021 |website = www.michigan.gov }}</ref>
Michigan's speed limits on urban Interstates are typically higher than its adjacent states. For example, in the Detroit metro area, [[Interstate 75 in Michigan|I-75]] southbound enters Detroit at [[M-102 (Michigan highway)|M-102]] (8 Mile Road, exit 59) and maintains a {{cvt|70|mph|0}} limit all the way until the interchange with [[Interstate 94 in Michigan|I-94]] (exit 53), where the speed limit drops to {{cvt|55|mph}}. Other freeways in Detroit such as I-94 and [[Interstate 96|I-96]] also have {{cvt|55|mph}} speed limits in and around the city's downtown area, but rise to {{cvt|70|mph|0}} relatively soon after leaving the downtown area. In Downtown [[Grand Rapids, Michigan|Grand Rapids]], [[Interstate 196|I-196]] has a speed limit of {{cvt|65|mph}}, the only other urban Interstate Highway to have a reduced speed limit. US 131 in Grand Rapids is one of the only non-Interstate urban freeways in Michigan with a {{convert|70|mph|0}} speed limit, which was raised from {{convert|55|mph}} in 2013. Furthermore, speed limits in smaller cities, including [[Ann Arbor, Michigan|Ann Arbor]], [[Battle Creek, Michigan|Battle Creek]], [[Flint, Michigan|Flint]], [[Kalamazoo, Michigan|Kalamazoo]], [[Lansing, Michigan|Lansing]] (the state capital), and [[Saginaw, Michigan|Saginaw]] remain at {{cvt|70|mph|0}}.
The default speed on all other highways, whether two or four lanes, is {{cvt|55|mph}}. However, Michigan permits speed limits of up to {{cvt|65|mph}} after a safety study concludes the higher limit is safe to implement. Until 2016, this provision only applied to four-lane divided non-limited access highways. A {{convert|20|mile|adj=on}} stretch of [[U.S. Route 127 in Michigan|US&nbsp;127]] between [[St. Johns, Michigan|St. Johns]] and [[Ithaca, Michigan|Ithaca]] was posted at {{cvt|65|mph}}, as a compromise to allow a freer flow of traffic due to insufficient funds to improve the section to freeway standards. The speed limit on [[U.S. Route 2 in Michigan|US&nbsp;2]] between [[Rapid River, Michigan|Rapid River]] and [[Gladstone, Michigan|Gladstone]] in the [[Upper Peninsula]] was also raised to {{cvt|65|mph}}. In 2017 speed limits began increasing to 65&nbsp;mph on several select two-lane roads in both the Lower and Upper Peninsulas of Michigan, including US 2 from St. Ignace to Rapid River and M-28 from I-75 to Munising.
==Midway Atoll==
The speed limit in [[Midway Atoll]] is {{convert|15|mph|km/h|0|abbr=on}}.<ref>https://www.govregs.com/regulations/expand/title50_chapterI_part38_subpartC_section38.13 Midway Atoll Code. Retrieved January 8, 2018.</ref>
==Minnesota==
Urban speeds are set, by default, to {{cvt|30|mph}}.<ref>{{Cite web |url = https://www.revisor.mn.gov/statutes/cite/169.14#stat.169.14.2 |title = Sec. 169.14 MN Statutes }}</ref> As of August 2019 cities have been allowed to set speed limits on city-owned streets without the [[Minnesota Department of Transportation]] (MnDOT) conducting a speed study, though the law does require the city to conduct its own, independent engineering review. Cities may also adopt a speed limit of {{cvt|25|mph}} on a residential road without any form of study needed. To date, [[Minneapolis]] and [[Saint Paul, Minnesota|Saint Paul]] have both adopted a citywide {{cvt|20|mph}} speed limit unless otherwise posted, though most major city streets are posted at {{cvt|25|mph}}.
A {{cvt|70|mph|0}} speed limit is only allowed on [[Minnesota]]'s [[Interstate Highway System|Interstates]] outside of urban areas. A speed limit of {{cvt|55|mph}} is typically used in urban areas where a higher speed limit might be used, but traffic congestion or other reasons require a lower speed limit. Examples include [[Interstate 94 in Minnesota|I-94]], [[Interstate 35W (Minnesota)|I-35W]] and [[Interstate 35E (Minnesota)|I-35E]] in and around Minneapolis, [[Moorhead, Minnesota|Moorhead]] and Saint Paul. I-35E goes down to a speed limit of {{cvt|45|mph}} in some areas of Saint Paul. A speed limit of {{cvt|60|mph}} is typically used in suburban areas such as [[Interstate 494|I-494]] and [[Interstate 694|I-694]] loops in the Twin Cities metro area.
Non-Interstate [[divided highway]]s (both freeways and [[Limited-access road|expressways]]) have speed limits of {{cvt|65|mph}} in rural areas and up to {{cvt|60|mph}} in urban or suburban areas (Note: some non-Interstate divided highways have gotten speed limit increases in November 2017 such as US&nbsp;169 in the Twin Cities metro area). Rural roads in Minnesota have limits of {{cvt|55|mph}} unless otherwise posted, although many {{cvt|60|mph}} speed limits are in place after a traffic and engineering study from 2014 to 2019.<ref>http://www.dot.state.mn.us/govrel/reports/2019/2018%20TH%20Speed%20Limit%20Report-final%20year%20report.pdf {{Bare URL PDF|date=March 2022}}</ref>
==Mississippi==
A speed limit of 70&nbsp;mph is only allowed on [[Mississippi]]'s rural freeways; only the [[Interstate Highway|Interstates]] (except [[Interstate 110 (Mississippi)|I-110]]), [[U.S. Highway 78|US 78]], [[Mississippi Highway 304]] (MS 304), and a portion of [[U.S. Highway 82|US 82]] have speed limits of 70&nbsp;mph, with these lengths making up approximately 86% of the state's freeway mileage.
A speed limit of 65&nbsp;mph is typically used on the state's four-lane divided highways, which include parts of the following roadways:
* [[U.S. Route 45]] / [[U.S. Route 45 Alternate]]
* [[U.S. Route 49]] / [[U.S. Route 49W]]
* [[U.S. Route 61]]
* [[U.S. Route 72]]
* [[U.S. Route 82]]
* [[U.S. Route 84]]
* [[U.S. Route 90]]
* [[U.S. Route 98]]
* [[U.S. Route 278]]
* [[Mississippi State Highway 15|MS 15]]
* [[Mississippi State Highway 19|MS 19]]
* [[Mississippi State Highway 25|MS 25]]
* [[Mississippi State Highway 39|MS 39]]
* [[Mississippi State Highway 57|MS 57]]
* [[Mississippi State Highway 63|MS 63]]
* [[Mississippi State Highway 67|MS 67]]
* [[Mississippi State Highway 302|MS 302]]
* [[Mississippi State Highway 605|MS 605]]
* [[Mississippi State Highway 607|MS 607]]
A speed limit of 60&nbsp;mph is typically used in urban areas where a higher speed limit might be used, but traffic or geometric conditions constitute a lower speed limit, including the following areas:
* [[Interstate 20]] in [[Vicksburg, Mississippi|Vicksburg]], from [[Jackson, Mississippi|Jackson]] to [[Pearl, Mississippi|Pearl]], and [[Meridian, Mississippi|Meridian]]
* [[Interstate 55]] from Jackson to [[Ridgeland, Mississippi|Ridgeland]]
* [[Interstate 59]] in [[Laurel, Mississippi|Laurel]] and Meridian
* [[U.S. Route 61]] in [[Tunica Resorts, Mississippi|Tunica Resorts]]
* [[U.S. Route 78]] in [[New Albany, Mississippi|New Albany]]
* [[U.S. Route 82]] in [[Columbus, Mississippi|Columbus]]
House Bill 3, passed during the 2008 First Extraordinary Session of the state legislature, permits speed limits up to {{convert|80|mph|km/h|0|abbr=on}} on toll roads in the state; however, {{As of|2022|lc=on}}, no such road has been constructed.<ref>[http://billstatus.ls.state.ms.us/documents/20081E/html/HB/0001-0099/HB0003SG.htm HB 3 (As Sent to Governor)]. Billstatus.ls.state.ms.us.</ref>
Mississippi has a minimum speed of 30&nbsp;mph on four-lane [[United States Numbered Highway System|U.S. Highways]] when no hazard exists. Strangely, there is no law for the minimum speed of the state's growing number of four-lane state highways. The minimum is 40&nbsp;mph on Interstate Highways and on four-lane U.S. Highways that have a 70&nbsp;mph speed limit.<ref>{{Cite web |url = http://198.187.128.12/mississippi/lpext.dll?f=templates&fn=fs-main.htm&2.0 |title = Mississippi Code §63-3-509 |access-date = August 13, 2014 |archive-url = https://web.archive.org/web/20070308095040/http://198.187.128.12/mississippi/lpext.dll?f=templates&fn=fs-main.htm&2.0 |archive-date = March 8, 2007 |url-status = dead }}</ref> In 2004, Mississippi posted minimum speed limits (40&nbsp;mph) on all rural Interstates, but this minimum speed limit was already state law before then.
==Missouri==
Statutory speed limits in [[Missouri]] are as follows:
* Interstate highways and freeways in rural areas: 70&nbsp;mph
* Expressways in rural areas: 65&nbsp;mph (notable exceptions being the US 54 & US 63 Expressways to the north of Jefferson City, which are at-grade expressways with a 70&nbsp;mph speed limit)
* Interstates, freeways, and expressways in urban areas: 60&nbsp;mph
* Other numbered state-maintained rural highways: 60&nbsp;mph
* State gravel roads: 35&nbsp;mph
Freeways are defined as: "a limited access divided highway of at least ten miles in length with four or more lanes which is not part of the federal interstate system of highways which does not have any crossovers or accesses from streets, roads or other highways at the same grade level as such divided highway within such ten miles of divided highway."
Expressways are defined as: "a divided highway of at least ten miles in length with four or more lanes which is not part of the federal interstate system of highways which has crossovers or accesses from streets, roads or other highways at the same grade level as such divided highway."
Urban Areas are defined as: "an area of fifty thousand population at a density at or greater than one thousand persons per square mile".
The highways and transportation commission may raise or lower the speed limit on these highways, but no speed limit may be set above 70&nbsp;mph on a numbered highway and 60&nbsp;mph on a lettered highway.<ref>[http://www.moga.mo.gov/statutes/C300-399/3040000010.HTM Missouri Revised Statutes §304-010]. Moga.mo.gov (August 28, 2012).</ref>
Interstate highways have minimum speed limits of 40&nbsp;mph.
===Variable speed limits===
Missouri concluded a two-year experiment with [[variable speed limit]]s along [[Interstate 270 (Illinois-Missouri)|I-270]] around [[St. Louis, Missouri|St. Louis]]. Digital [[traffic sign|signs]] had been erected along the freeway as well as additional signs alerting drivers about the use of variable speed limits. The limits will vary between 40 and 60&nbsp;miles per hour, depending on traffic conditions, and could change by up to 5&nbsp;mph every 5&nbsp;minutes. These speed limits, as of January 2012, are now posted as "Advisory Speed Limits".<ref>{{cite web |title = Dickerson Oxton |date = March 3, 2014 |url = http://www.dickersonoxton.com/missouri-accidents-county-2013/ |publisher = Missouri Motor Vehicle Accidents by County in 2013. }}</ref>
During the closure and major rebuild of [[Interstate 64 in Missouri|I-64]] in St. Louis, an additional lane was added to [[Interstate 44 in Missouri|I-44]] and [[Interstate 70 in Missouri|I-70]], and the speed limit was thus reduced to 55&nbsp;mph on those roads within the St. Louis County and City. The I-64 construction has been completed, and the extra lanes were removed in 2010. In October 2010, the speed limit was restored to 60&nbsp;mph on both I-44 and I-70.<ref>{{cite web |url = http://www.kmov.com/news/local/MoDOT-to-increase-speed-limit-on-I-44-in-St-Louis-County-105691118.html |title = MoDOT to increase speed limit on I-44 in St. Louis County &#124; KMOV.com &#124; St. Louis news, Missouri news & breaking news &#124; KMOV.com &#124; News for St. Louis, Missouri |access-date = August 13, 2014 |url-status = dead |archive-url = https://web.archive.org/web/20101027132320/http://www.kmov.com/news/local/MoDOT-to-increase-speed-limit-on-I-44-in-St-Louis-County-105691118.html |archive-date = October 27, 2010 }}. KMOV (October 25, 2010).</ref>
===Exceptions to the statutory limits===
Most two-lane roads with shoulders have a 60&nbsp;mph speed limit in Missouri. Two-lane roads without shoulders are usually, but not always, limited to 55&nbsp;mph. Some improved two-lane highways have a 65&nbsp;mph speed limit in rural areas, such as:
* [[U.S. Route 54|US-54]] from [[El Dorado Springs, Missouri|El Dorado Springs]] west to the [[Kansas]] state line; from the [[Missouri Route 73|MO-73]] intersection southwest of [[Macks Creek, Missouri|Macks Creek]] to near [[Camdenton, Missouri|Camdenton]]; and also along the three-mile-long [[Mexico, Missouri|Mexico]] bypass.
* [[U.S. Route 63|US-63]] from [[Vienna, Missouri|Vienna]] south to [[Thayer, Missouri|Thayer]], near the [[Arkansas]] state line. Some of this route has three lanes, with the passing lane alternating between northbound and southbound traffic.
* [[Missouri Route 5|MO-5]] between [[Camdenton, Missouri|Camdenton]] and [[Lebanon, Missouri|Lebanon]]. This road has three lanes, with the passing lane alternating between northbound and southbound traffic.
* [[Missouri Route 43|MO-43]] from US-54 south to [[Seneca, Missouri|Seneca]]
* [[Missouri Route 96|MO-96]] from I-44 west to [[Carthage, Missouri|Carthage]]
<!-- Please no more examples. These are enough to get the point across.  -->
Most rural expressways have a 65&nbsp;mph speed limit, however some have an upgraded speed limit of 70&nbsp;mph
* [[U.S. Route 54|US-54]] from the south end of the [[Mexico, Missouri|Mexico]] bypass to the Route W interchange just across the [[Missouri River]] from [[Jefferson City, Missouri|Jefferson City]], with the exception of the I-70 interchange area at Kingdom City, which is 45&nbsp;mph. US-54 also has a 70&nbsp;mph speed limit from Fall Hill Road in [[Cole County, Missouri|Cole County]] to just north of the Business Route 54 intersection in [[Lake Ozark, Missouri|Lake Ozark]].<ref>{{cite news |url = http://www.connectmidmissouri.com/news/story.aspx?id=473645#.UV4ZK5OG16g |publisher = KRCG |date = June 22, 2010 |access-date = March 19, 2017 |last = Miller |first = Kermit |title = Speed limit lowered on Highway 54 }}</ref>
* [[U.S. Route 63|US-63]] from the south end of the [[Kirksville, Missouri|Kirksville]] bypass to US-54 north of [[Jefferson City, Missouri|Jefferson City]], with the exception of the sections through [[Macon, Missouri|Macon]], where US 63 follows undivided surface streets through the city, and [[Columbia, Missouri|Columbia]], where the speed limit drops to 65&nbsp;mph.<ref>http://tmn.truman.edu/theindex/2013/01/16/modot-increase-route-63-speed-limit/ {{Webarchive|url=https://web.archive.org/web/20140814041632/http://tmn.truman.edu/theindex/2013/01/16/modot-increase-route-63-speed-limit/ |date=August 14, 2014}} Truman State University Index (January 16, 2013)</ref><ref>{{cite news |url = http://www.columbiatribune.com/news/local/state-cuts-speed-on-highway/article_4a8be01c-b958-5b1f-be5d-924cf8f8d893.html |publisher = Columbia Tribune |date = April 11, 2010 |access-date = March 19, 2017 |last = David |first = Brennan |title = State cuts speed on highway }}</ref>
* [[Missouri Route 7|MO-7]] from [[Interstate 49 in Missouri|I-49]] to just west of [[Clinton, Missouri|Clinton]].
* The [[James River Freeway]] from [[Interstate 44 in Missouri|I-44]] to [[Missouri Route 13|Route 13]] west of Springfield is built to full Interstate Highway Standards, and has a 70&nbsp;mph speed limit. The speed limit drops to 60&nbsp;mph through Springfield itself, similar to other urban Interstate highways in Missouri.
* The [[U.S. Route 71 in Missouri|US-71]] expressway from [[Pineville, Missouri|Pineville]] to [[Harrisonville, Missouri|Harrisonville]] had a 70&nbsp;mph limit before it was upgraded to [[Interstate 49 in Missouri|I-49]].
<!-- Please no more examples. These are enough to get the point across.  -->
Most Missouri [[Missouri supplemental route|lettered highways]] are 55&nbsp;mph, and in densely populated areas they can be less. There are several that have a speed limit of 60&nbsp;mph, including the following:
* [[Missouri Route M (Jefferson County)|Route M]] in Jefferson County is an expressway for most of its length, and most of the highway has a speed limit of 60&nbsp;mph.
* Route A in Jefferson County, an upgraded two lane road with shoulders, has a 60&nbsp;mph speed limit. Route A travels between [[Hillsboro, Missouri|Hillsboro]] and [[Festus, Missouri|Festus]].
*Route B in Boone County is mostly an upgraded two lane road with shoulders. As such, it has a 60&nbsp;mph speed limit from just north of [[Columbia, MO|Columbia]] to the end of the upgraded section 1 mile south of [[Hallsville, Missouri|Hallsville]]. North of Hallsville, the highway becomes [[Missouri Route 124|Route 124]], which also has a 60&nbsp;mph speed limit.
*Route C in Cole County is an upgraded two-lane highway with shoulders, and has a 60&nbsp;mph speed limit from just west of [[Jefferson City, Missouri|Jefferson City]] to just east of [[Russellville, Missouri|Russellville]].
*Route A in Osage County follows the former routing of [[US Route 50 in Missouri|US Route 50]] from its intersection with modern-day US 50 to [[Loose Creek, Missouri|Loose Creek]]. Since the roadway is designed to the same standards as a major highway, the speed limit is 60&nbsp;mph on that stretch of road.
<!-- Please no more examples. These are enough to get the point across.  -->
In the urban areas of [[St. Louis]], [[Kansas City, Missouri|Kansas City]], [[Columbia, Missouri|Columbia]], [[St. Joseph, Missouri|St. Joseph]], and [[Springfield, Missouri|Springfield]], the speed limit typically drops to 60&nbsp;mph on Interstates and freeways. In addition, on I-44 in [[Rolla, Missouri|Rolla]] the speed limit is reduced to 60&nbsp;mph from just west of Exit 184 to Exit 186 because of a substandard design.
Freeway speed limits in urban areas can be as low as 45 or 50&nbsp;mph in a few very short sections in downtown Kansas City and St. Louis, or as high as 65&nbsp;mph in the outer portions of the St. Louis, Kansas City and St. Joseph areas. The [[Cape Girardeau, Missouri|Cape Girardeau]] and [[Joplin, Missouri|Joplin]] areas have no reduced freeway speed limits, and I-435 around [[Kansas City metropolitan area|Kansas City]] has a 70&nbsp;mph limit from I-35 in [[Claycomo, Missouri|Claycomo]] to the Kansas State Line around the northern and western part of the metro area.
[[Interstate 29|I-29]] in Kansas City has a limit of 70&nbsp;mph north of Barry Road in Platte County to south of Highway 169 in Buchanan County where the limit drops to 65&nbsp;mph. North of Frederick Road in Buchanan County the limit returns to 70&nbsp;mph until the [[Iowa]] state line.
==Montana==<!-- This section is linked from [[Speed ~]] -->
As of October 1, 2015, the maximum speed limit in Montana is {{cvt|80|mph|0}}. On May 5, 2015, a bill to increase Montana's rural interstate highway speed limit from 75 to 80&nbsp;mph was signed into law by Governor [[Steve Bullock (American politician)|Steve Bullock]].<ref>{{cite news |url = http://helenair.com/news/politics/updated-bullock-signs-higher-mph-interstate-speed-limit-into-law/article_f47fc9aa-2fee-5459-80a1-b252331380a3.html |title = Bullock signs higher 80 mph interstate speed limit into law |work = Helena Independent Record |date = May 5, 2015 |access-date = May 6, 2015 |author = Dennison, Mike }}</ref>
===Reasonable and prudent===
[[File:MONTANA-PR.svg|thumb|right|250px|Typical speed limit sign that one would see at the Montana state line from December 1995 to June 1999]]
In the years before the 1974 [[National Maximum Speed Law#1974—55 mph National Speed Limit|national 55&nbsp;mph limit]], and for three years after the [[National Maximum Speed Law#1995—Repeal of federal limits|1995 repeal of the increased 65&nbsp;mph limit]], [[Montana]] had a non-numeric "reasonable and prudent" speed limit during the daytime on most rural roads. Montana Code Annotated (MCA) Section 61-8-303 said "A person ... shall drive the vehicle ... at a rate of speed no greater than is reasonable and proper under the conditions existing at the point of operation ... so as not to unduly or unreasonably endanger the life, limb, property, or other rights of a person entitled to the use of the street or highway."
Montana law also specified a few numeric limits: a night speed limit, usually {{convert|55|or|65|mph|km/h|0|abbr=on}}, depending on road type; {{convert|25|mph|km/h|0|abbr=on}} in urban districts and {{convert|35|mph|km/h|0|abbr=on}} in construction zones.
The phrase "reasonable and prudent" is found in the language of most state speed laws. This allows prosecution under non-ideal conditions such as rain or snow when the speed limit would be imprudently fast.
===No speed limit===
On March 10, 1996,<ref>[http://caselaw.lp.findlaw.com/scripts/getcase.pl?court=MT&vol=97&invol=486 FindLaw for Legal Professionals – Case Law, Federal and State Resources, Forms, and Code]. Caselaw.lp.findlaw.com.</ref> a Montana [[highway patrol|patrolman]] issued a [[traffic ticket|speeding ticket]] to a driver traveling at {{convert|85|mph|km/h|0|abbr=on}} on a stretch of [[Montana Highway 200|State Highway 200]]. The 50‑year‑old driver (Rudy Stanko) was operating a 1996 [[Chevrolet Camaro]] with less than {{convert|10,000|mi|km}} on the [[odometer]].<!-- The preceding text is relevant because newness of the vehicle and age-implied competence of driver are relevant. Part of reasonable and prudent is whether the vehicle and driver can handle the speed. --> Although the officer gave no opinion as to what would have been a reasonable speed, the driver was convicted. The driver appealed to the [[Montana Supreme Court]]. The Court reversed the conviction in case No. 97–486 on December 23, 1998; it held that a law requiring drivers to drive at a non-numerical "reasonable and proper" speed "is so [[Void for vagueness|vague]] that it violates the [[Due process|Due Process]] Clause ... of the [[Montana Constitution]]".
Effective May 28, 1999, as a result of that decision, the [[Montana State Government|Montana Legislature]] established a speed limit of {{cvt|75|mph|0}}.<ref>[http://www.mdt.mt.gov/travinfo/speed_limit.shtml Official Montana Department of Transportation site]. Mdt.mt.gov (May 28, 1999).</ref>
* Montana's US, State, and even Secondary roads have speed limits posted 70&nbsp;mph/night:65; truck:60/night:55.
Seven years later, a research study conducted by the Insurance Institute for Highway Safety, a long-time advocate of the federal National Maximum Speed Law, showed Montana's 75&nbsp;mph speed limit on rural Interstates was well received by motorists; traffic speed measurements taken by IIHS showed 76 percent of cars in compliance with 75&nbsp;mph on those roads. IIHS also found large trucks subject to Montana's unchanged 65&nbsp;mph speed limit for large trucks on rural Interstates slowed down dramatically, from a mean speed of 70&nbsp;mph in 1996 to 65&nbsp;mph in 2006, with the 85th percentile large truck speed dropping 11&nbsp;mph, from 79&nbsp;mph in 1996 to 68&nbsp;mph in 2006.<ref>Retting, Richard, and Yeoh, Eric, 2008. "Traffic Speeds on Interstates and Freeways 10 Years After Repeal of National Maximum Speed Limit." Traffic Injury Prevention 9: 119-124, p. 122, Table II. {{ISSN|1538-9588}}.</ref>
===75 and 80 mph speed limits===
Despite this reversal, Montana's then-governor, [[Marc Racicot]], did not convene an emergency session of the legislature. Certain roads technically had no speed limit whatsoever until June 1999, after the Montana legislature met in regular session and enacted a new law. The law's practical effect was to require numeric speed limits on all roads and disallow any speed limit higher than {{cvt|75|mph|0}}.
Montana law still contains a section that says "a person shall operate a vehicle in a careful and prudent manner and at a reduced rate of speed no greater than is reasonable and prudent under the conditions existing at the point of operation, taking into account the amount and character of [[traffic congestion|traffic]], [[driver visibility|visibility]], weather, and roadway conditions." However, this is a standard clause that appears in other state traffic codes and has the practical effect of requiring a speed lower than the speed limit where a lower speed is necessary to maintain a reasonable and prudent road manner.
Montana also has limited sections of night speed limits.<ref name="MT Night">{{cite web |title = 61-8-303(1)(b) - Speed restrictions |url = https://leg.mt.gov/bills/mca/title_0610/chapter_0080/part_0030/section_0030/0610-0080-0030-0030.html |website = Montana Code Annotated |publisher = [[State of Montana]] |access-date = July 4, 2018 |quote = the speed limit for vehicles traveling...on any other public highway of this state is 70 miles an hour during the '''daytime''' and 65 miles an hour during the '''nighttime''' }}</ref> Other speed limits in Montana are {{cvt|15-35|mph|0}} in a school zone,<ref>{{Cite web |url = http://leg.mt.gov/bills/mca/61/8/61-8-310.htm |title = 61-8-310. When local authorities may and shall alter limits or establish or alter area of school zone |access-date = March 22, 2018 |archive-date = November 2, 2017 |archive-url = https://web.archive.org/web/20171102034713/http://leg.mt.gov/bills/mca/61/8/61-8-310.htm |url-status = dead }}</ref> {{cvt|30|mph|0}} in a residential district, {{cvt|35-45|mph}} on boulevards, {{cvt|55|mph}} on traffic-light highways, {{cvt|65-70|mph|0}} on rural divided 4-lane highways, and {{cvt|55-70|mph|0}} on rural 2-lane undivided highways.
On May 10, 2019, Governor Steve Bullock signed HB 393 into law. This law raises the truck speed limit to {{cvt|70|mph|0}} at all times on rural freeways and {{cvt|65|mph|0}} at all times on other rural highways.
==Nebraska==
The maximum speed limit in Nebraska is 75&nbsp;mph on rural Interstate highways. This speed limit only applies to [[Interstate 80]] between [[Omaha, Nebraska|Omaha]] and [[Lincoln, Nebraska|Lincoln]], and west of Lincoln to the [[Wyoming]] state line, as well as the small section of [[Interstate 76 (Colorado–Nebraska)|Interstate 76]] that enters the southwestern corner of the state from [[Colorado]] to join I-80. Freeways and expressways in urban areas are posted at 65&nbsp;mph. The speed limit in rural areas of Nebraska is 65&nbsp;mph unless otherwise posted, although rural divided highways and [[Super two]] highways are posted at 70&nbsp;mph.<ref>{{Cite web |url = http://www.transportation.nebraska.gov/docs/speed-limit.pdf |title = Archived copy |access-date = June 8, 2016 |archive-date = March 6, 2016 |archive-url = https://web.archive.org/web/20160306142106/http://www.transportation.nebraska.gov/docs/speed-limit.pdf |url-status = dead }}</ref> The most recent change to Nebraska's speed limits was enacted on April 17, 2018,<ref>{{Cite web |url = https://nebraskalegislature.gov/bills/view_bill.php?DocumentID=33960 |title = Nebraska Legislature - Legislative Document }}</ref> which resulted in all maximum speed limits in the state (except those for rural Interstate highways) being raised by five miles per hour.
==Nevada==
The maximum speed limits in [[Nevada]] are {{cvt|70-80|mph|0}} on rural freeways, {{cvt|65-75|mph|0}} on other rural divided highways, {{cvt|55-70|mph|0}} on primary undivided roads, and {{cvt|65|mph|0}} on urban freeways.
* [[Interstate 15 in Nevada|I-15]] is posted at {{cvt|70|mph|0}} south of [[Las Vegas]] to match [[California]]'s 70&nbsp;mph posted limit, and {{cvt|75|mph|0}} northeast of Las Vegas (north of milepost 52).
* [[U.S. Route 95 in Nevada|US 95]] north of Las Vegas is {{cvt|70|mph|0}}. From south of [[U.S. Route 93 in Nevada|US 93]] near [[Boulder City, Nevada|Boulder City]] south to [[Nevada State Route 163|SR 163]], it is {{cvt|75|mph|0}}.
* [[Interstate 80 in Nevada|I-80]] from [[Reno, Nevada]] to [[Utah]] varies from {{cvt|65-80|mph|0}}. Most rural sections are posted at {{cvt|75|mph|0}}. The sections east of Oasis to the Utah Border and between [[Fernley, Nevada|Fernley]] and [[Winnemucca, Nevada|Winnemucca]] are {{cvt|80|mph|0}} as of 2018 except the portion in [[Lovelock, Nevada|Lovelock]]. Mountainous sections and those laid through narrow valleys are usually {{cvt|70|mph|0}}. West of Reno, I-80 is posted at {{cvt|65|mph|0}} as it quickly transitions from suburban Reno to crossing the [[Sierra Nevada (U.S.)|Sierra Nevada]] into [[California]], where the limit is also 65&nbsp;mph.
* [[U.S. Route 50 in Nevada|US 50]] from [[Lake Tahoe]] to [[Ely, Nevada|Ely]] and [[Utah]] is {{cvt|70|mph|0}}.
* [[Interstate 580 in Nevada|I-580]] from exit 10 to just south of exit 24 is {{cvt|70|mph|0}} after which it is {{cvt|65|mph|0}}.
* US 95, I-15, and [[Interstate 215 in Nevada|I-215]] through downtown Las Vegas are all posted at {{cvt|65|mph|0}}.
Prior to the imposition of the {{cvt|50 and 55|mph|0}} speed limit in late 1973, Nevada also had a "reasonable and proper" speed Limit (non-numeric) on most of its rural highways, both freeway and others. The speed limit on certain two-lane highways is 70&nbsp;mph including US 95 to the Oregon border (where the speed limit is 65&nbsp;mph for trucks)<ref>{{cite web |title = § 811.111 Violating a speed limit |publisher = OregonLaws.org |url = http://www.oregonlaws.org/ors/811.111 }}</ref> and on certain sections of US 6 and 50 in the Nevada desert. Speed limits are 15 to 25&nbsp;mph in school zones and 25 to 30&nbsp;mph in residential districts. In 2015, the [[Nevada State Legislature]] voted to increase the statewide maximum speed limit to 80&nbsp;mph to take effect in October of that year. However, between October 2015 and March 2017, no 80&nbsp;mph speed limits were posted in the state.
On March 13, 2017, the Nevada DOT installed 80&nbsp;mph speed limit signs on the 130-mile stretch of I-80 between [[Fernley, Nevada|Fernley]] and [[Winnemucca, Nevada|Winnemucca]], excluding the [[Lovelock, Nevada|Lovelock]] (exits 106 and 107) area.<ref>{{Cite news |url = https://www.reviewjournal.com/news/2017-legislature/nevada-freeway-speed-limit-to-get-bump-to-80-mph/ |title = Nevada freeway speed limit to get bump to 80 mph |date = March 8, 2017 |work = Las Vegas Review-Journal |access-date = March 11, 2017 |language = en-US }}</ref><ref>{{Cite news |url = http://news3lv.com/news/local/nevada-implementing-80-mph-speed-limit-on-i-80 |title = Nevada implementing 80 mph speed limit on I-80 |agency = Associated Press |work = KSNV |access-date = March 11, 2017 |language = en-US }}</ref>
On February 21, 2018, the Nevada DOT increased the speed limit on I-80 to 80&nbsp;mph between [[Oasis, Nevada|Oasis]] and [[West Wendover, Nevada|West Wendover]].<ref>{{Cite news |url = http://www.rgj.com/story/news/2018/02/21/state-increases-speed-limit-elko-county-section-80/358692002/ |title = State increases speed limit on Elko County section of I-80 |agency = Associated Press |work = [[Reno Gazette-Journal]] |access-date = February 23, 2018 |language = en-US }}</ref>
In December 2018, the Nevada DOT increased the speed limit on more sections of I-80 to 80&nbsp;mph. The sections are from Winnemucca to Battle Mountain and from Elko to Wells.
==New Hampshire==
[[File:Antique New Hampshire speed limit sign.jpg|thumb|250px|right|Antique New Hampshire speed limit sign]]
The highest speed limit in [[New Hampshire]] is {{convert|70|mph|km/h|0|abbr=on|sigfig=2}}. It can be found on [[Interstate 93]] from mile marker 45 to the Vermont border (excluding the [[Franconia Notch Parkway]]). All other freeways and turnpikes have a maximum of {{convert|65|mph|km/h|0|abbr=on|sigfig=3}}. The minimum speed on Interstate Highways in New Hampshire is {{convert|45|mph|km/h|0|abbr=on|sigfig=1}} where posted.
Provided that no hazard exists that requires lower speed, the speed of any vehicle not in excess of the limit is deemed to be ''prima facie'' lawful. The limit for "rural residential districts" and Class V highways outside the city or town compact is {{convert|35|mph|km/h|0|abbr=on|sigfig=1}}. The limit for any "business or urban residence district" is {{convert|30|mph|km/h|0|abbr=on|sigfig=1}}. [[School zone]]s receive a {{convert|10|mph|km/h|0|abbr=on|sigfig=1}} reduction in the limit 45&nbsp;minutes before and after the beginning and end of a school day. The speed limit for a road work or construction area is {{convert|10|mph|km/h|0|abbr=on|sigfig=1}} lower than the normal speed limit, but not more than {{convert|45|mph|km/h|0|abbr=on|sigfig=1}}, when work is in progress. The speed limit for all other locations is {{convert|55|mph|km/h|0|abbr=on|sigfig=1}}. The minimum limit that a speed can be set in a rural or urban district is {{convert|25|mph|km/h|0|abbr=on|sigfig=1}}.
The speed limit on [[Interstate 93]] through [[Franconia Notch State Park]] falls to {{convert|45|mph|km/h|0|abbr=on|sigfig=1}} where the highway narrows to one lane in each direction, but rises back to {{convert|70|mph|km/h|0|abbr=on|sigfig=2}} (in {{convert|10|mph|km/h|0|abbr=on|sigfig=1}} increments going south) once the highway leaves Franconia Notch. [[Interstate 393]] in [[Concord, New Hampshire|Concord]] has a {{convert|55|mph|km/h|0|abbr=on|sigfig=1}} posted speed limit for its entire length, with the exception of {{convert|45|and|35|mph|km/h|0|abbr=on|sigfig=1}} zones on the westbound portion closest to the city center and the end of the highway. [[Interstate 293]]'s speed limit through downtown [[Manchester, New Hampshire|Manchester]] falls to {{convert|50|mph|km/h|0|abbr=on|sigfig=1}} as it runs along the [[Merrimack River]], but increases to {{convert|55|mph|km/h|0|abbr=on|sigfig=1}} on either side of the city center.
Prior to 1974, the [[Interstate 95 in New Hampshire|New Hampshire Turnpike]], along with rural sections of Interstates [[Interstate 89|89]] and 93, were posted at {{convert|70|mph|km/h|0|abbr=on|sigfig=2}}.
==New Jersey==
New Jersey's only statutory speed limits are:
* 50&nbsp;mph rural
* 25&nbsp;mph urban
Since the state is largely suburbanized, it ranges between 25 and 50&nbsp;mph depending the jurisdiction of the road and whether the municipality is township, village, town, borough or city status. New Jersey increased their freeway speed limits to 65&nbsp;mph in 1998 after the repeal of the [[National Maximum Speed Law]]. The only highways that are signed at 65&nbsp;mph in New Jersey are:
Toll roads:
* [[New Jersey Turnpike]] (south of [[Linden, New Jersey|Linden]])
* New Jersey Turnpike [[New Jersey Turnpike|Pennsylvania Turnpike Extension]] (I-95)
* [[Garden State Parkway]] (except between [[Paramus, New Jersey|Paramus]] and [[Old Bridge, New Jersey|Old Bridge]], and around [[Toms River, New Jersey|Toms River]])
* [[Atlantic City Expressway]] (west of the Garden State Parkway)
[[New Jersey Department of Transportation|NJDOT]] maintained highways:
* [[Interstate 295 (Delaware–Pennsylvania)|I-295]] (except in [[Pennsville, New Jersey|Pennsville]], and between [[Bellmawr, New Jersey|Bellmawr]] and [[Cherry Hill, New Jersey|Cherry Hill]])
* [[Interstate 80 in New Jersey|I-80]] (from the [[Delaware Water Gap]] to [[Wayne, New Jersey|Wayne]])
* [[Interstate 287|I-287]] (except in and around [[Morristown, New Jersey|Morristown]])
* [[Interstate 78 in New Jersey|I-78]] (from the [[Delaware River]] to [[Newark, New Jersey|Newark]])
* [[Interstate 195 (New Jersey)|I-195]]
* [[New Jersey Route 55|Route 55]]
* [[New Jersey Route 24|Route 24]]
* [[New Jersey Route 18|Route 18]] in [[Monmouth County, New Jersey|Monmouth County]]
In all 65&nbsp;mph speed zones, the fines for speeding and any other moving violations are doubled (that was the stipulation to increase the speed limit in the state).<ref>{{cite news | url=https://www.nytimes.com/1998/01/20/nyregion/metro-news-briefs-new-jersey-some-roads-will-have-65-mph-speed-limit.html | title=METRO NEWS BRIEFS: NEW JERSEY; Some Roads Will Have 65 M.P.H. Speed Limit | work=The New York Times | date=January 20, 1998 }}</ref> Signs informing drivers of this appear after most reassurance signs.
[[File:2018-10-02 10 46 48 View north along New Jersey State Route 700 (New Jersey Turnpike) just north of Exit 3 in Bellmawr, Camden County, New Jersey.jpg|thumb|Typical signage found in 65&nbsp;mph speed zones in New Jersey, informing drivers that traffic fines are doubled]]
Shorter length, and non-interstate freeways (such as [[U.S. Route 202 in New Jersey|US 202]], [[New Jersey Route 15|Route 15]], [[New Jersey Route 90|Route 90]], [[New Jersey Route 21|Route 21]], [[New Jersey Route 42|Route 42]], [[Interstate 676]], and [[New Jersey Route 33|Route 33]]) remain at 55&nbsp;mph.  Urban freeway speed limits are generally 50 to 55&nbsp;mph. However, some freeways in urban areas retain a 65&nbsp;mph speed limit. Only the New Jersey Turnpike system, including the Eastern and Western spurs, the [[New Jersey Turnpike|Newark Extension]] (I-78), and the [[New Jersey Turnpike|Pennsylvania Turnpike Extension]] (I-95) have variable speed limits along with variable message signs on their entire respective lengths.
As much of the state is incorporated, mostly every exurban, or rural two-lane surface road (whether state, or county maintained) is posted at 50&nbsp;mph. The only two-lane surface roads posted at 55&nbsp;mph in New Jersey are:
* [[County Route 539 (New Jersey)|County Route 539]]
* [[New Jersey Route 70|Route 70]], and [[New Jersey Route 72|Route 72]] in the [[Pine Barrens (New Jersey)|Pine Barrens]] of [[Ocean County, New Jersey|Ocean]] and [[Burlington County, New Jersey|Burlington]] Counties<ref name=539SLD>{{cite web |url = http://www.state.nj.us/transportation/refdata/sldiag/00000539__-.pdf |title = Route 539 straight line diagram |publisher = [[New Jersey Department of Transportation]] (NJDOT) |access-date = December 8, 2013 }}</ref><ref name=70SLD>{{cite web |url = http://www.state.nj.us/transportation/refdata/sldiag/00000070__-.pdf |title = Route 70 straight line diagram |publisher = NJDOT |access-date = December 8, 2013 }}</ref><ref name=72SLD>{{cite web |url = http://www.state.nj.us/transportation/refdata/sldiag/00000072__-.pdf |title = Route 72 straight line diagram |publisher = NJDOT |access-date = December 8, 2013 }}</ref>
* [[New Jersey Route 54|Route 54]] in [[Atlantic County, New Jersey|Atlantic County]].<ref name=54SLD>{{cite web |url = http://www.state.nj.us/transportation/refdata/sldiag/00000054__-.pdf |title = Route 54 straight line diagram |publisher = NJDOT |access-date = December 8, 2013 }}</ref>
* Route 33 Freehold Bypass (where it is a [[super two]] freeway) <ref name=33SLD>{{cite web |url = http://www.state.nj.us/transportation/refdata/sldiag/00000033__-.pdf |title = Route 33 straight line diagram |publisher = NJDOT |access-date = December 8, 2013 }}</ref>
Two-to-four lane or greater state highways (often with a [[Jersey barrier|jersey divider]] or grass median) are generally posted as high as 50&nbsp;to 55&nbsp;mph. County and municipal maintained roads in the state are not posted above 50&nbsp;mph. School zones, business, or residential districts are usually posted at 25&nbsp;mph. Certain low density business and residential districts are posted at 35&nbsp;mph to 45&nbsp;mph. <ref>{{cite web | url=https://www.nj.gov/faqs/drive/#:~:text=The%20speed%20limit%2C%20unless%20otherwise%20posted%2C%20is%2025,65%20mph%20on%20certain%20state%20highways%20%28as%20posted%29. | title=Frequently Asked Questions &#124; Driving }}</ref> However, there are a handful of 45&nbsp;mph residential stretches (such as Terill Road in [[Scotch Plains, New Jersey|Scotch Plains]] and Woodbridge Avenue ([[County Route 514 (New Jersey)|CR 514]]) in [[Edison, New Jersey|Edison]]). All rural non posted, county-maintained roads have a speed limit of 50&nbsp;mph, as per state law.
==New Mexico==
Speed limits for all classes of roads and areas are set by statute in New Mexico, meaning that any changes to the state's speed limits would require a bill to pass both chambers of the Legislature and be signed into law by the Governor (or overridden by the Legislature in the event of a Governor's veto). With the exception of wartime, [[New Mexico]] had no default numeric speed limit until the early 1950s.<ref>[http://www.ibiblio.org/rdu/slaw1949.html history of speed limits, Ibiblio, 1998]. Ibiblio.org.</ref> Prior to the [[National Maximum Speed Law#1974—55&nbsp;mph National Speed Limit|national 55&nbsp;mph limit]] in 1974, the speed limit on rural [[Interstate Highway|Interstates]] was 75 miles per hour during the day and 70&nbsp;mph at night. Primary highways in open areas had daytime speed limits of 70&nbsp;mph and nighttime ones of 60&nbsp;mph. Secondary highways in open areas had daytime speed limits of 60&nbsp;mph and nighttime ones of 50&nbsp;mph. Before the end of [[National Maximum Speed Law#1987 and 1988—65&nbsp;mph limit|federal speed controls]], the maximum speed limit was 65&nbsp;mph on Interstate routes and 55&nbsp;mph elsewhere. In May 1996 legislation enacted by Governor [[Gary Johnson]] raised the absolute speed limit in New Mexico to 75&nbsp;mph.<ref>New Mexico Statutes Chapter 66 Article 7 Part 4 Statute 66-7-301 (and in subsequent references −303, −305, −308, −311, −316, −317) [http://www.conwaygreene.com/nmsu/lpext.dll?f=templates&fn=main-h.htm&2.0|New New Mexico State Legislature] {{Webarchive|url=https://web.archive.org/web/20160303231729/http://www.conwaygreene.com/nmsu/lpext.dll?f=templates&fn=main-h.htm&2.0%7CNew |date=March 3, 2016}} or [http://www.nmlaws.org/ nmlaws.org]</ref> Signs are posted on the vast majority of the mileage of Interstate routes to that effect. The default speed limit for any road where no speed limit is posted is 55&nbsp;mph.
New Mexico has six major freeway facilities, which include three lengthy Interstate routes. Part of [[U.S. Route 70 in New Mexico|US-70]] (as a [[divided highway]]) between [[Las Cruces, New Mexico|Las Cruces]] and [[Alamogordo, New Mexico|Alamogordo]] is one of only two sections of non-Interstate route as well as being the first road in New Mexico that's not a freeway to have the 75&nbsp;mph limit; as of January 2019, US 285 between Roswell and Vaughn was raised to 75&nbsp;mph as well.<ref>{{Cite web |url = https://www.rdrnews.com/2018/12/19/speed-limit-to-increase-to-75-mph-between-roswell-vaughn-in-january/ |title = Speed limit to increase to 75 MPH between Roswell, Vaughn in January &#124; Roswell Daily Record |date = December 19, 2018 }}</ref> New Mexico, Nevada (US 95 south of US 93), and Texas are the only three states with 75&nbsp;mph limits on roads that aren't freeways. There is no statutory requirement for reduced speeds on urban freeways so that, for example at [[Santa Fe, New Mexico|Santa Fe]] and [[Las Vegas, New Mexico|Las Vegas]] the speed limit remains 75&nbsp;mph on [[Interstate 25 in New Mexico|I-25]]. New Mexico, Kansas, North Dakota, Colorado, and Texas are the only states to have a speed limit greater than 70&nbsp;mph in urban highways. Nonetheless, there are 65&nbsp;mph limits on freeways in more heavily urbanized areas such as [[Albuquerque, New Mexico|Albuquerque]] and Las Cruces. Other reduced speed limits do exist, but the lowest speed limit under normal conditions on New Mexico's freeways is 55&nbsp;mph, which can be found on two sections of Interstate 25: The first section being three miles from the [[Big I]] to Gibson Boulevard in Albuquerque, and the second being a short stretch near [[Raton Pass]]. These particular stretches of I-25 were originally built as relocations of US-85, whose design and construction predate the interstate highway era. As such, these stretches do not meet modern interstate highway standards, and have closely spaced interchanges, sharp curves, and/or limited sight distances.
By statute, other state maintained roads may have speed limits of up to 75&nbsp;mph. Four-lane divided highways in open areas often have 65&nbsp;mph limits, with some 70&nbsp;mph limits, such as almost the entire length of [[U.S. Route 550|US 550]] from [[Bloomfield, New Mexico|Bloomfield]] to [[Bernalillo, New Mexico|Bernalillo]], and a 23-mile stretch of [[U.S. Route 70 in New Mexico|US 70]] west of [[Roswell, New Mexico|Roswell]].
Primary two-lane highways in open areas with parking shoulders often have 65&nbsp;mph limits.
Most primary two-lane highways without parking shoulders in open and mixed rural areas still have a 55&nbsp;mph limit, but some have 60&nbsp;mph limits.
A 65&nbsp;mph left lane minimum speed limit is sometimes indicated on 75&nbsp;mph roads with steep grades, "slower traffic keep right" is also in effect. On one-way roadways state law reserves the left and center lanes of two or more lanes for passing.<ref>New Mexico Statutes Chapter 66 Article 7 Part 4 Statute 66-7-305, −308, −311, −316, −317 [http://www.conwaygreene.com/nmsu/lpext.dll?f=templates&fn=main-h.htm&2.0|New New Mexico State Legislature] {{Webarchive|url=https://web.archive.org/web/20160303231729/http://www.conwaygreene.com/nmsu/lpext.dll?f=templates&fn=main-h.htm&2.0%7CNew |date=March 3, 2016}} or [http://www.nmlaws.org/ nmlaws.org]</ref> There are reduced advisory speed limits for some roads during poor weather. Speeding fines are doubled in construction zones and designated safety corridors, with signs often stating this. There are no longer night speed limits, nor are there any differential speed limits for heavy trucks.
There are two other statutory speed limits in New Mexico that are often altered, especially on urban [[arterial road|arterials]] or even city or countywide:<ref>New Mexico Statutes Chapter 66 Article 7 Part 4 Statute 66-7-301, −303 [http://www.conwaygreene.com/nmsu/lpext.dll?f=templates&fn=main-h.htm&2.0|New New Mexico State Legislature] {{Webarchive|url=https://web.archive.org/web/20160303231729/http://www.conwaygreene.com/nmsu/lpext.dll?f=templates&fn=main-h.htm&2.0%7CNew |date=March 3, 2016}} or [http://www.nmlaws.org/ nmlaws.org]</ref> thirty miles per hour in a "business or residence district" and fifteen miles per hour near [[school zone|schools at certain times]]. For example, in [[Albuquerque, New Mexico|Albuquerque]] the default speed limit is thirty miles per hour as per state law, but many streets have a different speed limit. Some school zones there have twenty miles per hour speed limits. The city of [[Santa Fe, New Mexico|Santa Fe's]] default speed limit is twenty five miles per hour.<ref>[http://70.168.205.112/santafe_nm/lpext.dll?f=templates&fn=main-h.htm&2.0 City of Santa Fe Code Chapter XXIV ExhibitA 12-6-1.2A] {{Webarchive|url=https://web.archive.org/web/20121115113340/http://70.168.205.112/santafe_nm/lpext.dll?f=templates&fn=main-h.htm&2.0 |date=November 15, 2012}}. 70.168.205.112.</ref> Although there are no signs to make drivers aware of the altered limit, the limit is signed on most roads where it applies. [[Los Alamos County, New Mexico|Los Alamos County]] alters the urban default and absolute speed limits to twenty five miles per hour and 50&nbsp;mph respectively, but posts signs at county lines.
* The speed limit on [[New Mexico State Road 502|NM 502]] between San Ildefonso Pueblo and Pojoaque Valley High School had a 65-mph speed limit. In November 2005, the stretch between [[New Mexico State Road 4|NM-4]] and [[Pojoaque, New Mexico|Pojoaque]] became a safety corridor. In 2007, the speed limit on the San Ildefonso-Pojoaque stretch was lowered to 55&nbsp;mph.
* On [[New Mexico State Road 68|Highway 68]], the speed limit is 60&nbsp;mph on much of the four-lane stretch between Española and Velarde.
* Minimum 65 left lane signs are posted on I-40 west of Albuquerque, a night speed limit of 30&nbsp;mph is posted on [[New Mexico State Road 7|State Highway 7]] west of White's City going into [[Carlsbad Caverns]].
* Truck speed limit signs are rarely posted. One road has a posted limit of 45&nbsp;mph/trucks:35 in Escondida, just north of [[Socorro, New Mexico|Socorro]], and [[U.S. Route 82|US 82]] east of [[Alamogordo, New Mexico|Alamogordo]] has a posted limit of 55&nbsp;mph/trucks:50 for approximately a two-mile stretch.
* As of December 24, 2009, [[U.S. Route 54|US 54]] still has a 55&nbsp;mph speed limit north of [[Tularosa, New Mexico|Tularosa]]. Yet [[New Mexico State Road 9|NM-9]] and CR-A003 have a 65&nbsp;mph speed limit east of [[Columbus, New Mexico|Columbus]] to NM 136 near [[Santa Teresa, New Mexico|Santa Teresa]]. CR-A003 (Columbus-Santa Teresa Highway) is the only county road in New Mexico to exceed the statutory maximum 55&nbsp;mph speed limit for county roads.
* [[Interstate 10 in New Mexico|Interstate 10]] was 70&nbsp;mph between the Texas-New Mexico state line and two miles south of [[Interstate 25 in New Mexico|I-25]] in [[Las Cruces, New Mexico|Las Cruces]] until October 2012, when it was raised to 75&nbsp;mph. While it is 75&nbsp;mph in the rest of New Mexico, the speed limit is 65&nbsp;mph in Las Cruces, [[Deming, New Mexico|Deming]], and [[Lordsburg, New Mexico|Lordsburg]].
* I-25 was posted 70&nbsp;mph in [[Sandoval County, New Mexico|Sandoval County]] from the Bernalillo-Sandoval county line to US 550, but the limit was raised to 75&nbsp;mph in May 2014.
* State Highway 30, a paved two-lane road with shoulders, has a 55&nbsp;mph speed limit from [[New Mexico State Road 502|NM 502]] to the junction with the road for Santa Clara Pueblo, then reduces to 45&nbsp;mph and then to 40&nbsp;mph upon entering the [[Española, New Mexico|Española]] city limits. Prior to 2008 the speed limits were 60&nbsp;mph from NM 502 until the junction with the road for Santa Clara Pueblo where it reduced to 45&nbsp;mph, raised back to 60&nbsp;mph until the Española city limits where it reduced to 50&nbsp;mph, and then to 40&nbsp;mph near its northern terminus at US 84/285.
* [[U.S. Route 84|US 84]]/[[U.S. Route 285|285]] between Santa Fe and Pojoaque, before it was upgraded to a freeway, had a 45&nbsp;mph limit from Guadalupe Road in Santa Fe to the interchange with NM 599, increased to 55&nbsp;mph to the southern terminus of Santa Fe County Road 73, increased to 60&nbsp;mph until entering Cuyamungue, decreased to 55&nbsp;mph, and then to 45&nbsp;mph upon entering Pojoaque. Since it was upgraded to a full freeway in 2005, the speed limit from Guadalupe Road to NM 599 is now 55&nbsp;mph, increases to 65&nbsp;mph until Pojoaque where it briefly reduces to 50&nbsp;mph and then to 45&nbsp;mph.
* The posted speed limit on Silver Avenue in [[Albuquerque, New Mexico|Albuquerque]] is 18&nbsp;mph. When the route was designated as a bicycle route in the late 2000s, Albuquerque officials established the unusual 18&nbsp;mph speed limit on Silver Avenue to increase motorists' awareness of the street's designation as a city bicycle route.
Most of US 285 (non freeway) between Vaughn and Roswell is posted at 75&nbsp;mph (as of December 2018.)
Outside of [[Bernalillo County, New Mexico|Bernalillo County]], no points are assessed to one's license for speeding in rural areas in New Mexico, unless the excessive speed was a contributing factor to a traffic accident.
==New York==
[[File:SIGNS21.jpg|thumb|right|150px|A standard-style New York State speed sign indicating the state speed limit]]
Speed limits are statutory (set by law) or regulatory (enacted by regulation), not necessarily by engineering standards. [[New York (state)|New York]] has a blanket statutory "Reasonable and Prudent" speed law.<ref>[http://public.leginfo.state.ny.us/LAWSSEAF.cgi?QUERYTYPE=LAWS+&QUERYDATA=$$VAT1180$$@TXVAT01180+&LIST=LAW+&BROWSER=BROWSER+&TOKEN=18192391+&TARGET=VIEW Laws of New York]. Public.leginfo.state.ny.us.</ref>
The highest posted speed limit in New York is {{convert|65|mph|km/h|0|abbr=on}}, found only on limited-access freeways (including some state highways, most of the [[New York State Thruway]] and select [[Interstate Highway System|Interstate Highways]]). The default speed limit, posted as the "State Speed Limit", is 55&nbsp;mph, which is in effect unless otherwise posted or in the absence of speed limit signs.<ref>NYS DMV drivers' handbook</ref>
The [[New York State Department of Transportation]] sets speed limits in the vast majority of the state. Counties and most towns must petition DOT to change a speed limit. State law allows villages, cities, towns with more than 50,000 residents, and certain towns defined by law to be "suburban" to set speed limits on state, county, and local roads within their borders.
There is no state law regarding minimum speed limits, but a minimum speed limit of 40&nbsp;mph has been set on the entire length of [[Interstate 787]] and the entire length of [[Interstate 495 (New York)|Interstate 495]] (the [[Long Island Expressway]]). The [[New York State Thruway]] does not have a firm minimum speed, but there are signs advising drivers to use their flashers when traveling at speeds below 40&nbsp;mph.
New York does not have separate truck speed limits on its highways, except for the New England Thruway ([[Interstate 95 in New York|Interstate 95]]), which has a limit of 50&nbsp;mph for trucks and 55&nbsp;mph for all other vehicles.
New York law allows area speed limits. An area speed limit applies to all highways within a specified area, except those specifically excluded. The area may be an entire municipality, or only a specific neighborhood. The defined area may also be the grounds of a school, hospital, or other institution. Area speed limits are signed at their perimeters with signs reading "Area Speed Limit" and the speed limit value shown below. "Area" may be replaced with a term that more precisely defines the area boundaries, such as "Town", "City", "Park", "Village" or "Campus".
[[File:NY 28B reaching former southern terminus.jpg|thumb|250px|The phrase "End 30 Mile Speed" is occasionally seen on old signage marking the end of a speed zone; it was phased out in the 1980s.]]
Normally, the end of a lowered speed limit is marked with a sign reading "State Speed Limit 55", indicating that the statewide speed limit applies. In areas where a curve or other road condition makes the state speed limit inadvisable, a sign reading "End XX m.p.h. Limit" may be used, with XX replaced with the speed limit value. A "State Speed Limit 55" sign should be installed after the curve.<ref name=":3">{{cite book |url=https://www.dot.ny.gov/divisions/operating/oom/transportation-systems/repository/B-2011Supplement-adopted.pdf |title=N.Y.S Supplement to the Manual on Uniform Traffic Control Devices for Streets and Highways |date=March 16, 2011 |publisher=New York State Department of Transportation |edition=2009 |pages=25–28,164}}</ref> This sign is sometimes misused in locations where the speed limit changes to a speed other than 55&nbsp;mph. This is mainly applied on both undivided and divided rural non-freeway routes. Though rarely seen, some divided roadways are set as low as 45&nbsp;mph but mainly stay at the state speed limit of 55&nbsp;mph; in one exceptional case, that of the [[Scajaquada Expressway]], the speed limit was lowered to 30&nbsp;mph in 2016 after a fatality.
The top speed limit in most residential/urban and business district areas is at 30&nbsp;mph, and state law prohibits speed limits below 25&nbsp;mph on most common residential areas, though a speed limit of 25 is mainly only used in the New York City area and rarely seen outside of said area. School speed limits may be set as high as 45&nbsp;mph (only on state speed limit roads in rural areas) to as low as 15&nbsp;mph.<ref name=":3" /> New York City has established a number of 20&nbsp;mph "Neighborhood Slow Zones" in residential neighborhoods.<ref>{{cite web |title = Neighborhood Slow Zones |url = http://www.nyc.gov/html/dot/html/motorist/slowzones.shtml |publisher = New York City Department of Transportation |access-date = July 15, 2013 }}</ref> In residential neighborhood areas outside of New York City range between 30 and 40&nbsp;mph and 35–45&nbsp;mph on suburban/urban arterial routes.
New York's Criminal Procedure Law prevents law enforcement personnel from issuing a ticket for any offense that they did not witness personally, meaning that, among other ramifications, the state's [[electronic toll collection]] system can not be used for speed enforcement.<ref>[http://public.leginfo.state.ny.us/LAWSSEAF.cgi?QUERYTYPE=LAWS+&QUERYDATA=$$CPL140.10$$@TXCPL0140.10+&LIST=LAW+&BROWSER=BROWSER+&TOKEN=18192391+&TARGET=VIEW Laws of New York]. Public.leginfo.state.ny.us.</ref>
===History===
Many expressways and parkways in the New York City suburbs were posted as high as 65&nbsp;mph in the early 1970s. During the 1973 Oil Embargo, New York lowered its speed limit to 50. The [[National Maximum Speed Law]] brought statewide speed limits up to 55. The city of New York, being a city, retained the 50&nbsp;mph speed limit. New York restored its 65&nbsp;mph speed limit in late 1995, soon before the NMSL was repealed.
Until September 2003, the state legislature needed to approve individual 65&nbsp;mph zones, a lengthy process taking months or years of politically motivated debate. Then-Governor [[George Pataki]] signed legislation in September 2003 that enables [[New York State Department of Transportation|NYSDOT]] and [[New York State Thruway Authority]] to raise speed limits to 65&nbsp;mph on its roads that meet established design and safety standards. This legislation became active in March 2004, and the speed limit was subsequently raised to 65&nbsp;mph on [[New York State Route 7|NY Route 7]] (locally known as "Alternate Route 7"), [[Interstate 684]] and [[Interstate 84 in New York|Interstate 84]] east of the Hudson River in New York.
==North Carolina==
Unless otherwise posted, the speed limit in North Carolina is:<ref name="NC GS § 20-141">{{cite web |title = NC GS § 20-141 |url = https://www4.ncleg.net/enactedlegislation/statutes/html/bysection/chapter_20/gs_20-141.html |publisher = North Carolina General Assembly |access-date = January 29, 2021 }}</ref>
[[File:NCSpeeds.png|thumb|NC Speed Limits by County]]
* {{cvt|55|mph}} in rural areas
* {{cvt|35|mph}} within city limits
The highest maximum speed limit allowed under North Carolina state law is {{cvt|70|mph|0}} if determined to be "safe and reasonable" by NCDOT engineering studies.{{cn|date=June 2023}} The state typically posts speed limits of {{cvt|65|mph|0}} on urban freeways and {{cvt|70|mph|0}} on rural freeways; some mountainous stretches are instead restricted to {{cvt|60|mph|0}}.
[[File:Speed limit sign Elizabeth city NC 2018.jpg|thumb|A typical speed limit 70 sign on US highway 17 near [[Elizabeth City, North Carolina|Elizabeth City]].]]
This generally applies to non-freeway primary and secondary roads throughout the state. Prior to the [[National Maximum Speed Law]] that went into effect nationwide, North Carolina used to have 60&nbsp;mph speed limits on two-lane primary and secondary roads.<ref>{{cite web |title = Enacted March 9, 1967 |publisher = North Carolina Department of Transportation |url = https://connect.ncdot.gov/resources/safety/Route%20Changes/1967_03_09.pdf }}{{page needed|date=December 2015}}</ref> Warning signs are posted in all cases where the speed limit drops on a road. In addition, a "reduce speed ahead" sign is commonly posted on major highways, though it is being phased out.
It is rare that NCDOT will assign a speed drop greater than 20&nbsp;mph. In [[Bertie County]], the US 17 bypass in [[Windsor, North Carolina|Windsor]] drops from 70&nbsp;mph to 45&nbsp;mph. In [[Moore County, NC|Moore County]], Shady Lane Road outside of [[Carthage, NC|Carthage]] in the Hillcrest community drops from 55&nbsp;mph to 30&nbsp;mph. In Ocracoke, the speed limit on NC 12 southbound drops from 55&nbsp;mph to 20&nbsp;mph.
Although not statutory, it is relatively common to encounter {{cvt|45|mph}} speed limits. Many suburban 2- and 4-lane roads, as well as most 4-lane roads within municipal limits, carry a 45&nbsp;mph speed limit. 45&nbsp;mph speed limits are also not uncommon in more densely populated rural areas. Subdivision and residential streets generally, though not always carry a {{cvt|25|mph}} speed limit. However, when signs are not present, the speed limit is still 35&nbsp;mph by default. In downtown areas, it's common to encounter 20&nbsp;mph speed limits, although those are not statutory at the state level, and are typically controlled by the municipality the area is within. These speed limits are generally considered to be grandfathered in, per a policy from NCDOT stating new speed limits below 25&nbsp;mph "will generally not be approved."<ref>{{cite web |title = North Carolina Traffic Ordinance Manual |publisher = North Carolina Department of Transportation |url = https://connect.ncdot.gov/resources/safety/Crash%20Data%20and%20TEAAS%20System/Chapter_03_Speed_Limits.pdf }}</ref> Many [[arterial road]]s near the city limits are posted at {{cvt|50|mph}}, but otherwise 50&nbsp;mph is not commonly posted. There is one interstate posted at 50&nbsp;mph, [[Interstate 277 (North Carolina)|I-277]] in downtown [[Charlotte, North Carolina|Charlotte]]. This is the lowest speed limit on any interstate in North Carolina.
[[School zone]] speed limits generally entail a 10 to 20&nbsp;mph reduction below the original speed limit during times of day used for school arrivals and departures. Such a speed limit would be indicated when entering the school zone. Also, the default or modified speed limit is indicated after leaving the school zone. A school zone speed limit cannot be less than 20&nbsp;mph.
[[Military base]]s are generally posted at a maximum of 50&nbsp;mph. As of May 2010, [[Fort Bragg (North Carolina)|Fort Bragg]] military two-lane roadways are now posted at 55&nbsp;mph instead of 50&nbsp;mph. Prior to May 2010, the speed limits higher than 50&nbsp;mph through military bases were only on N.C. Highway 690 along the north side of Fort Bragg, Murchison Road (also known as [[North Carolina Highway 210|N.C. Highway 210]]) and the All American Freeway (which is classified and numbered as a state-maintained [[North Carolina Highway System#Secondary Roads|Secondary Road]] even though it is a freeway).
The state park speed limit is 25&nbsp;mph unless otherwise posted. These are not limited to places such as [[Hanging Rock State Park]] and [[Mount Mitchell State Park]]. The [[Blue Ridge Parkway]] is 45&nbsp;mph. However, there are occasional 35&nbsp;mph stretches. The [[National Park Service]] is responsible for highway maintenance and speed enforcement on the Parkway.
The county governments of North Carolina do not have any control over speed limits or any other aspect of road operation, as there are no county roads in the state. Municipalities, on the other hand, can set speed limits on city-controlled roadways, subject to applicable state laws. Freeways and expressways with no primary route number are part of the Secondary Road system and bear route numbers of 1000 or greater. Their maximum posted speed limit is 55&nbsp;mph with four exceptions.
=== Other speed limits ===
There is a default minimum speed limit on [[Interstate Highway|Interstate]] and primary highways of {{cvt|45|mph}}, but only when [[traffic sign|signs]] are present. The only roadway in North Carolina currently with a minimum speed limit is the I-77 Express Lanes, with a minimum of 45&nbsp;mph. Generally there is no minimum on interstates to allow for slow moving farm equipment.
Highways do not generally have separate truck speed limits in North Carolina. There are a few exceptions however, such as [[Interstate 40|I-40]] from [[Old Fort, North Carolina|Old Fort]] to [[Black Mountain, North Carolina|Black Mountain]] (35&nbsp;mph) and from [[Hendersonville, North Carolina|Hendersonville]] to the [[Tennessee]] state line (50&nbsp;mph) These limits are in place due to dangerous mountain curves and grades.
North Carolina operates a Safe Driving Incentive Plan (SDIP),<ref>[http://www.consumerarts.com/auto/frame/sdip.htm SDIP Points] {{Webarchive|url=https://web.archive.org/web/20121001034354/http://www.consumerarts.com/auto/frame/sdip.htm |date=October 1, 2012}}. Consumerarts.com (January 1, 1998).</ref> a program that leads to insurance surcharges for moving violations based on a point system. In general, for speeding violations less than 10&nbsp;mph over the posted speed limit in a speed zone less than 55&nbsp;mph, one point is assessed; two points are assessed for exceeding 10&nbsp;mph over the limit or speeding in a zone with a speed limit of greater than 55&nbsp;mph.
A driver's license will be suspended for traveling faster than 15&nbsp;mph over the speed limit, provided the speed traveled is greater than 55&nbsp;mph; suspensions can result for other speeding infractions, such as traveling faster than 75&nbsp;mph in a 65&nbsp;mph or less zone or faster than 80&nbsp;mph in a 70&nbsp;mph zone. North Carolina law makes exceeding 80&nbsp;mph anywhere in the state (regardless of the posted speed limit) a Class 3 Misdemeanor, as well as exceeding 15&nbsp;mph over the posted speed limit.<ref name="NC GS § 20-141"/>
In 2013, the North Carolina Senate passed a bill to explore raising the speed limit on certain low volume freeways to {{cvt|75|mph|0}}. The bill would have given the DOT permission to raise the speed limit on freeways deemed safe for 75&nbsp;mph travel. However, the House defeated the bill, and no efforts have been made to raise them since.
==North Dakota==
[[North Dakota]]'s major interstates, [[Interstate 29 in North Dakota|I-29]] and [[Interstate 94 in North Dakota|I-94]], have a 75&nbsp;mph speed limit in most rural areas, with 55-75&nbsp;mph zones within portions of the [[Fargo, North Dakota|Fargo]] and [[Bismarck, North Dakota|Bismarck]]/[[Mandan, North Dakota|Mandan]] urban areas (I-29 in [[Grand Forks]] is signed at 75&nbsp;mph). The state's 4 lane Divided Highways as well as 2 short stretches of undivided 4 lane highways (US 2 around Rugby and U.S. 83 as it passes the eastern Lake Sakakawea Reservoir) usually carry a 70&nbsp;mph limit, with 2 lane restricted to up to a 65&nbsp;mph limit, and gravel roads have up to 55&nbsp;mph limits. Roads within cities hold their own defined limits with 25&nbsp;mph speed limits common in residential streets and 25-40&nbsp;mph limits on urban 4-6 lane divided and undivided streets, with school zones at 15–25&nbsp;mph.
==Northern Mariana Islands==
The speed limit in the [[Northern Mariana Islands]] is {{convert|45|mph|km/h|0|abbr=on}}.<ref>http://www.ghsa.org/state-laws/issues/speeding%20and%20aggressive%20driving ''Ghsa.org.'' Retrieved January 8, 2018.</ref>
==Ohio==
[[File:Speed limits in Ohio.svg|thumb|right|300px|''Prima facie'' speed limits defined in {{ORC|45|11|21}}(B). Other divisions of section 4511.21 define processes by which these speed limits may be increased or decreased along specific roadways.]]
The maximum speed limit found on highways in [[Ohio]] is {{convert|70|mph|0}} on the Ohio Turnpike, Rural Freeways, and both the Expressway and Freeway portions of [[US 30]] from Mansfield, Ohio to the Indiana State Line and [[US 33]] from Wapakoneta to St. Mary's Ohio.<ref>{{Cite web |url = http://limaohio.com/news/6069/speed-limit-on-u-s-30-bumped-to-70-mph |title = Speed limit on U.S. 30 bumped to 70 MPH |date = June 25, 2015 |access-date = January 3, 2016 |archive-date = March 4, 2016 |archive-url = https://web.archive.org/web/20160304065354/http://limaohio.com/news/6069/speed-limit-on-u-s-30-bumped-to-70-mph |url-status = dead }}</ref><ref>{{Cite web |url = http://www.dispatch.com/content/stories/local/2013/09/28/70-mph-speed-limit-is-days-away-on-rural-freeways.html |title = 70-MPH speed limit is days away on rural freeways }}</ref> The speed limit ranges from {{cvt|55|mph|0}} to {{cvt|70|mph|0}} on other divided highways. A small portion of the westbound lane (less than 500 feet) of [[Ohio State Route 16|State Route 16]] in [[Licking County, Ohio|Licking County]] is signed at 70 MPH slightly before the route upgrades from a two-lane non-divided to a four-lane divided highway, but otherwise, no non-divided highway in the state currently has a speed limit higher than {{convert|55|mph}}.
Ohio is the only state east of the Mississippi River to allow 70&nbsp;mph speed limits on non freeway roads. Both divided and non divided roads qualify.{{Citation needed|date=May 2017}}
Ohio has an urban speed limit of {{convert|65|mph}} on Interstates by state law, yet many urban areas have lower speed limits due to safety concerns found in speed studies. These commonly are in the 50–60&nbsp;mph range. For instance, in most of metro [[Dayton, Ohio|Dayton]] and [[Cincinnati]], as well as in downtown [[Columbus, Ohio|Columbus]], the speed limit is {{convert|55|mph}}, while in [[Cleveland]], [[Toledo, Ohio|Toledo]], and [[Akron, Ohio|Akron]] the speed limit is {{convert|60|mph}}; however, in central [[Cleveland]] along the Inner Belt, the speed limit is {{convert|50|mph}}. On one case, however, the [[Ohio Turnpike]] has a {{cvt|70|mph|0}} limit in the outer suburbs of Toledo, Akron, and Cleveland. Some urban areas are also posted with minimum speed limits, usually with a minimum of 40 or 45. At one time, portions of [[Interstate 76 (Ohio–New Jersey)|Interstate 76]] and [[Interstate 77]] in downtown [[Akron]] had a maximum speed limit of 50&nbsp;mph and a minimum speed limit of 35&nbsp;mph.
School zones in Ohio normally have a 20&nbsp;mph speed limit, regardless of the road's normal speed limit, in effect during school hours.
==Oklahoma==
In [[Oklahoma]], the maximum posted speed limit is 75–80&nbsp;miles per hour on [[Toll road|turnpikes]] and 70-75&nbsp;mph on all other freeways.<ref name=":1">{{Cite web |url = https://www.koco.com/article/gov-stitt-signs-bill-to-increase-speed-limits-on-oklahoma-turnpikes-highways/27196689 |title = Gov. Stitt signs bill to increase speed limits on Oklahoma turnpikes, highways |author = KOCO Staff |date = April 18, 2019 |website = KOCO |language = en |access-date = April 19, 2019 }}</ref> Most other rural highways, divided or undivided, have a 65&nbsp;mph speed limit (although some rural [[divided highway]]s and some sections of undivided [[U.S. Route 412 in Oklahoma|US 412]] have a 70&nbsp;mph limit).<ref>{{Cite web |title=Boise City to Fairview Public Schools |url=https://www.google.com/maps/dir/36.7258041,-102.4830859/36.3620957,-98.4765956/@36.9894427,-101.1224602,7.83z/data=!4m2!4m1!3e0 |access-date=2023-02-14 |website=Boise City to Fairview Public Schools |language=en}}</ref><ref>{{Cite web |title=Google Maps |url=https://www.google.com/maps/@36.3620554,-98.4809173,3a,76.7y,266.9h,86.09t/data=!3m6!1e1!3m4!1sKSNvX9gm9exaH7i2JF9pPg!2e0!7i16384!8i8192 |access-date=2023-02-14 |website=Google Maps |language=en}}</ref> Rural sections of freeway or turnpike are supplemented with a sign warning "no tolerance". Also, rural four-lane turnpikes carry a minimum speed limit of is 60&nbsp;mph. On May 9, 2016, Governor Fallin signed HB 3167 which removes numerical caps on rural highway speed limits in Oklahoma which took effect in November 2016. Even with this bill the speed limits across the state were not expected to change because of budget issues in doing studies <ref>{{Cite web |url = https://www.tulsaworld.com/news/local/government-and-politics/speed-limits-not-expected-to-increase-under-new-law-odot/article_0221cd43-3978-5ff9-bb22-b1cb27f0a4b0.html |title = Speed limits not expected to increase under new law, ODOT says |last = Bureau |first = BARBARA HOBEROCK World Capitol |website = Tulsa World |date = May 14, 2016 |language = en |access-date = April 19, 2019 }}</ref> In April 2019, a new bill was signed into law that raised the limit to 80&nbsp;mph on turnpikes and 75 on other freeways.<ref name=":1" />
On July 28, 2020, the [[Oklahoma Turnpike Authority]] approved raising posted speed limits to 80&nbsp;mph on 104 miles of turnpikes:<ref>{{Cite web |url = https://www.koco.com/article/oklahoma-turnpike-authority-votes-to-increase-speed-limit-on-rural-segments-of-turnpikes/33446681 |title = Oklahoma Turnpike Authority approves proposal to increase speed limit on rural segments of turnpikes |author = KOCO Staff |website = KOCO |date = July 28, 2020 |language = en |access-date = July 28, 2020 }}</ref>
* [[Turner Turnpike]] from mile marker (MM) 203 to MM 216, between Bristow and Sapulpa, 13 miles
* [[Muskogee Turnpike]] from MM 2 to MM 33, between Muskogee and Tulsa, 31 miles
* [[Cherokee Turnpike]] from MM 3 to MM 28, 25 miles
* [[Indian Nation Turnpike]] from MM 93 to MM 104, between SH-9 and I-40, 11 miles
* [[H.E. Bailey Turnpike]] (Norman Spur) from MM 102 to MM 107, 5 miles
* [[Kickapoo Turnpike]] (partially opened) from MM 130 to MM 149, between I-40 and the Turner Turnpike, 19 miles
Existing speed limits on rural turnpikes like the [[Will Rogers Turnpike]], main segment of the H.E. Bailey Turnpike, [[Cimarron Turnpike]] and [[Chickasaw Turnpike]] will not be changed as part of this action.
On August 3, 2020, the Oklahoma Transportation Commission approved increasing the speed limit from 70 to 75&nbsp;mph on nearly 400 miles of I-35 and I-40.  The sections on I-35 are from the Texas border to the OK 74 overpass south of Purcell and from just north of the Oklahoma/Logan County line to the Kansas border.  On I-40, the speed limit will be increased from just west of Sallisaw to just east of Shawnee, from just west of Yukon to just east of Weatherford, from Clinton to just east of Elk City and from just west of the junction with OK 34 to the Texas border.<ref>{{cite press release |first1 = Terri |last1 = Angier |first2 = Brenda |last2 = Perry |title = A drive up to 75; speed limit changes in sight for some rural Oklahoma interstates (# 20-019) |url = https://www.ok.gov/triton/modules/newsroom/newsroom_article.php?id=277&article_id=60721 |publisher = [[Oklahoma Department of Transportation]] |date = August 3, 2020 |access-date = August 9, 2020 }}</ref>
==Oregon==
[[File:Speed35.jpg|thumb|right|200px|A standard-style Oregon speed sign removing the word "limit"]]
The highest posted speed limit in Oregon is 70&nbsp;mph on I-84 east of The Dalles, I-82 and US 95 (trucks 65&nbsp;mph). Oregon state statutes allow for a maximum speed limit of 70&nbsp;mph on rural interstate highways, and the law gives the [[Oregon Department of Transportation]] (ODOT) discretion to define which freeway segments to post the 70&nbsp;mph speed limit. ODOT did not raise speed limits beyond 65&nbsp;mph on other freeways, and strongly opposed legislative efforts to raise the maximum allowable speed limit. However, in July 2015, Governor [[Kate Brown]] signed a bill raising speed limits on several highways in eastern Oregon; the bill included provisions to raise the speed limit to 70&nbsp;mph on [[Interstate 84 in Oregon|I-84]] and [[U.S. Route 95#Oregon|US 95]]. It was announced on October 6, 2017, that the truck speed limit will be increasing to 60&nbsp;mph on rural interstate highways where the car speed limit is 65&nbsp;mph as soon as new signs are posted. In all rural areas in Oregon, the speed limit is 55 unless otherwise posted.<ref>{{cite web |url = http://www.oregon.gov/ODOT/HWY/TRAFFIC-ROADWAY/docs/pdf/oregon_speed_zone_report_proposal.pdf |title = Recommendation for Setting Speed Limits on Interstate Highways in Oregon |publisher = oregon.gov }}</ref>
Until 2002, [[Oregon]] state law required that all speed limit signs omit the word LIMIT from their display. The reasoning behind this was related to the explicit "basic speed" law that existed, which allowed citation for exceeding speeds "too fast for conditions" regardless of the posted speed. The typeface of the numerals on the signs varies greatly depending on which jurisdiction made the sign, due to its non-standardized design. In 2002, the [[Oregon Department of Transportation]] revised its supplement to the [[MUTCD]], mandating the omission of the word LIMIT ''except'' on signs posted on [[Interstate Highway System|Interstate highways]]<ref>{{cite web |url = http://www.oregon.gov/ODOT/HWY/TRAFFIC-ROADWAY/docs/pdf/english_chapter_3.pdf |title = Chapter 3 |publisher = oregon.gov |access-date = December 8, 2010 }}</ref> and within city limits. As of 2014, ODOT has replaced nearly all SPEED signs posted on Interstates with SPEED LIMIT signs, but it was left to the various city governments to replace signs in their jurisdictions at their leisure, if at all. Thus, older SPEED signs are still a common sight across the state.
===Attempts to raise speed limits===
In 2003, the Oregon state legislature passed a bill that would have raised the maximum permissible speed limit on [[Interstate Highways]] to 70&nbsp;mph for cars with a 5&nbsp;mph differential for trucks, up from the previous 65&nbsp;mph limit for cars with a 10&nbsp;mph differential; this bill was signed into law by then newly elected Governor [[Ted Kulongoski]] on September 26, 2003.<ref name="Another step toward unsplitting speeds">{{cite web |title = Another step toward unsplitting speeds |url = http://www.landlinemag.com/Magazine/2003/Nov/News/unsplitting-speeds.aspx |publisher = Land Line |access-date = August 13, 2014 }}</ref> Although ODOT's 2004 study revealed that it is safe for cars to be traveling at 70&nbsp;mph and trucks at 60&nbsp;mph the Oregon Department of Transportation decided to not initially implement the increase out of concerns that it would not be safe to have trucks traveling at 65&nbsp;mph. Prior to the [[National Maximum Speed Law]], the speed limit on Oregon freeways was 75&nbsp;mph with some 70 limits on two-lane roads in eastern portions of the state. On July 20, 2015, Governor Brown signed HB 3402 into law. This bill raises the speed limit on [[Interstate 84 in Oregon|I-84]] east of The Dalles, [[Interstate 82 in Oregon|I-82]] (HB 4047 signed 2/23/16) and [[U.S. Route 95 in Oregon|US 95]] to 70&nbsp;mph for cars and 65&nbsp;mph for trucks. It also increases speed limits on several other two lane rural highways to 65&nbsp;mph for cars and 60&nbsp;mph for trucks in Eastern Oregon. The law took effect on March 1, 2016.<ref name="HB 3402">{{cite web |title = HB3402: Oregon Legislature Bill Tracker |url = http://gov.oregonlive.com/bill/2015/HB3402/ |access-date = August 20, 2015 }}</ref>
===School speed limits===
In 2004, a law was passed revising Oregon's [[school zone|school speed limit laws]]. In school zones, on roads with speed limits of 30&nbsp;mph or below, drivers were required to slow to 20&nbsp;mph 24&nbsp;hours a day, 365&nbsp;days a year, regardless of whether or not children were present. This replaced most 'when children are present' placards. If the speed limit was 35&nbsp;mph or higher, the school zone limit would be imposed either by flashing yellow lights or a placard denoting times and days of the week when the limit was in effect. The at-all-times rule was highly unpopular with motorists and was widely ignored. In 2006, the law was revised again, taking away the 'at all times' requirement and replacing it with a time-of-day system (usually school days, 7 a.m. to 5&nbsp;pm). School crossings with flashing yellow lights remain. In many communities, school zones are strictly enforced and speed traps in these areas are commonly employed.
ODOT has not chosen a variation of speed between two-lane roads in Oregon, regardless of the terrain. Any rural two-lane road in the state has a default speed limit of 55&nbsp;mph. Town speed limits are 20&nbsp;mph in an alley, 20&nbsp;mph in a school zone, 35&nbsp;mph on boulevards, and 45&nbsp;mph on roads with traffic lights.{{citation needed|date=November 2017}}
==Pennsylvania==
{{multiple image
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|header=70&nbsp;mph speed limit signs on the [[Pennsylvania Turnpike]]
|image1=Pennsylvania Turnpike 70 mph 1942.jpg
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|image2=Penna tpk speed limit 70 (sign crop).jpg
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}}
In [[Pennsylvania]] the maximum freeway speed limit is generally {{convert|65|mph|km/h|0|abbr=on}}, with select sections of rural freeway and most of the [[Pennsylvania Turnpike]] signed at {{convert|70|mph|km/h|0|abbr=on}}, or {{convert|55|mph|km/h|0|abbr=on}} such as most of standalone [[Interstate 70]]. The speed limit on urban freeways ranges from a low of 40&nbsp;mph in downtown [[Pittsburgh]] and [[Philadelphia]] to a high of 70&nbsp;mph on the Pennsylvania Turnpike around outer parts of Pittsburgh and Philadelphia.
In 1940, when the [[Pennsylvania Turnpike]] was opened between [[Irwin, Pennsylvania|Irwin]] and [[Carlisle, Pennsylvania|Carlisle]], the entire 160&nbsp;mile [[limited-access]] [[toll road]] did not have a speed limit, similar to that of the German [[Autobahn]]s. In 1941, a speed limit of {{convert|70|mph|km/h|0|abbr=on}} was established, only to be reduced to {{convert|35|mph|km/h|0|abbr=on}} during the war years (1942–45). After WWII, the limit was raised to 70&nbsp;mph on the four-lane sections, with the two-lane tunnels posted at {{convert|50|mph|km/h|0|abbr=on}} for cars and {{convert|40|mph|km/h|0|abbr=on}} for trucks. Prior to the [[National Maximum Speed Law|1974 federal speed limit law]], all [[Interstate Highway System|Interstates]] and the Turnpike had a {{convert|65|mph|km/h|0|abbr=on}} speed limit on rural stretches and a {{convert|60|mph|km/h|0|abbr=on}} speed limit in urban areas.
In 1995, the state raised the speed limit on rural stretches of Interstate Highways and the Pennsylvania Turnpike system to {{convert|65|mph|km/h|0|abbr=on}}, with urban areas having a {{convert|55|mph|km/h|0|abbr=on}} limit. In 1997, PennDOT raised the speed limit on some rural non-Interstate Highway [[bypass (road)|bypasses]] to {{convert|65|mph|km/h|0|abbr=on}}. In 2005, with the change in the designation of "urban zones" in the state, the entire lengths of both the Pennsylvania Turnpike's east–west mainline and [[Interstate 476|Northeast Extension]] were given {{convert|65|mph|km/h|0|abbr=on}} limits, except at the tunnels and through the winding {{convert|5.5|mi|km}} eastern approach to the [[Allegheny Mountain Tunnel]].
The 70&nbsp;mph speed limit was authorized by House Bill 1060, which was signed by Governor [[Tom Corbett]] on November 25, 2013.<ref>{{cite web |title = Regular Session 2013-2014: House Bill 1060 |publisher = Pennsylvania General Assembly |url = http://www.legis.state.pa.us/cfdocs/billInfo/billInfo.cfm?sYear=2013&sInd=0&body=h&type=b&bn=1060 }}</ref><ref name="70 mph speed limits coming to Pennsylvania in 2014">{{cite news |title = 70 mph speed limits coming to Pennsylvania in 2014 |url = https://www.mcall.com/2013/12/13/70-mph-speed-limits-coming-to-pennsylvania-in-2014/ |newspaper = The Morning Call |access-date = December 13, 2013 }}</ref> On July 18, 2014, the Pennsylvania Turnpike Commission announced the return of the 70&nbsp;mph speed limit on a 97-mile stretch of the mainline from the [[Blue Mountain (Pennsylvania)|Blue Mountain]] interchange (MP 201) to the [[Morgantown, Pennsylvania|Morgantown]] interchange (MP 298).<ref name="'Speed limit 70' coming to turnpike">{{cite news |title = 'Speed limit 70' coming to turnpike. |url = http://www.tribune-democrat.com/latestnews/x1667069940/Speed-limit-70-coming-to-turnpike |newspaper = The Tribune-Democrat |access-date = July 18, 2014 }}</ref> Signs were erected on July 22, 2014.<ref>{{cite web |last = Smith |first = Katelyn |title = Speed limit raised to 70 mph on Pa. Turnpike |publisher = WGAL-TV |location = Lancaster, PA |date = July 22, 2014 |url = http://www.wgal.com/news/speed-limit-raised-to-70-mph-on-pa-turnpike/27090824#!bj8rB6 |access-date = July 22, 2014 }}</ref> On July 23, 2014, PennDOT announced the speed limit will be increased to 70&nbsp;mph on [[Interstate 80 in Pennsylvania|I-80]] between interchange 101 in [[DuBois, Pennsylvania|DuBois]], [[Clearfield County, Pennsylvania|Clearfield County]] and milepost 189 in [[Clinton County, Pennsylvania|Clinton County]] and on [[Interstate 380 (Pennsylvania)|I-380]] between interchange 8 (MP 10) near [[Mount Pocono, Pennsylvania|Mount Pocono]], [[Monroe County, Pennsylvania|Monroe County]] and the junction with [[Interstate 84 in Pennsylvania|I-84]] in [[Lackawanna County, Pennsylvania|Lackawanna County]], on or around August 11, 2014, as a pilot project.<ref>{{cite web |title = Pa. Turnpike Unveils Signs in New 70 MPH Zone |publisher = Pennsylvania Turnpike Commission |date = July 23, 2014 |url = http://www.paturnpike.com/press/2014/20140723120105.htm |access-date = July 24, 2014 }}</ref> On March 15, 2016, the Pennsylvania Turnpike Commission approved raising the speed limit on the remaining {{convert|65|mph|km/h|round=5|abbr=on}} sections of the turnpike to {{convert|70|mph|km/h|round=5|abbr=on}}; sections that were posted at {{cvt|55|mph|0}} would retain that speed limit.<ref>{{cite news |title = Pennsylvania turnpike's 65 mph speed limit bumped to 70 mph |agency = Associated Press |work = The Philadelphia Inquirer |date = March 16, 2016 |url = http://www.philly.com/philly/wires/ap/news/nation/20160316_ap_aaa636b0e2534674808f588525525230.html |access-date = March 16, 2016 }}</ref><ref>{{cite news |last = Babay |first = Emily |title = Pennsylvania Turnpike speed limit rising to 70 mph |work = The Philadelphia Inquirer |date = March 16, 2016 |url = http://www.philly.com/philly/blogs/in-transit/Pennsylvania-Turnpike-speed-limit-rising-to-70-mph.html |access-date = March 16, 2016 }}</ref> A total of {{convert|396|mi|km}} of the Pennsylvania Turnpike system increased from {{convert|65|to|70|mph|km/h|round=5|abbr=on}}, including the extensions in Southwestern Pennsylvania. The speed limit remains {{cvt|55|mph|0}} within construction zones and tunnels, at mainline toll plazas, on the eastern approach of the Allegheny Mountain Tunnel, and between [[Bensalem, Pennsylvania|Bensalem]] and the [[Delaware River–Turnpike Toll Bridge|Delaware River Bridge]]. On May 2, 2016, PennDOT announced that the speed limit would be increased to {{convert|70|mph|km/h|round=5|abbr=on}} on about {{convert|800|mi|km}} of roadway across the state, including rural stretches of [[Interstate 79|I-79]], I-80, [[Interstate 99|I-99]], I-380, and [[U.S. Route 15 in Pennsylvania|US 15]],<ref>{{cite news |title = Pennsylvania to add 70 mph speed limit to nearly 800 miles |agency = Associated Press |work = The Philadelphia Inquirer |date = May 2, 2016 |url = http://www.philly.com/philly/news/20160502_ap_441fe97f882c4949a0950175dd29dc30.html |access-date = May 2, 2016 }}</ref> with conversion to take place on May 3.<ref>{{cite press release |title = Pennsylvania Turnpike and PennDOT Announce 70 mph Speed Limit Expansion |publisher = Pennsylvania Department of Transportation |date = May 2, 2016 |url = http://www.penndot.gov/Pages/all-news-details.aspx?newsid=221#.Vyfx8OQVSSo |access-date = May 2, 2016 }}</ref>
On non-freeway roads, speed limits are generally held at {{convert|55|mph|km/h|0|abbr=on}} for rural four-lane roads, {{convert|55|mph|km/h|0|abbr=on}} for rural two-lane roads, {{convert|45|–|55|mph|km/h|0|abbr=on}} for urban four lane roads and 40–45 (sometimes, but rarely, 50&nbsp;mph)&nbsp;mph (64–72&nbsp;km/h) for urban two lane roads, 35–45&nbsp;mph for roads in commercial business areas, 30{{convert|-35|mph|km/h|0|abbr=on}} for major roads in residential areas, 20{{convert|-25|mph|km/h|0|abbr=on}} for most municipal residential streets, including main north–south and east–west roads in county seats and other mid-sized to large towns, and 15{{convert|-20|mph|km/h|0|abbr=on}} for [[school zone]]s during school arrival and departure times only. It is also only in effect on days that the school the road goes near is in session. Many schools have signs that blink when the school speed limit is in effect. There is no reduced school speed on [[divided highway]]s, even if the school sits right beside the highway.
All state-owned two-lane roads in rural areas within Pennsylvania have a default speed limit of 55&nbsp;mph unless otherwise posted.
The Pennsylvania Turnpike has a minimum speed limit of 15&nbsp;mph below the posted maximum speed,<ref>[http://www.paturnpike.com/geninfo/rulesregs/rulesregs.aspx The Pennsylvania Turnpike – About the PTC] {{Webarchive|url=https://web.archive.org/web/20141113091005/http://www.paturnpike.com/geninfo/rulesregs/rulesregs.aspx |date=November 13, 2014}}. Paturnpike.com.</ref> though the minimum is only sporadically posted. This is not enforced for slow-moving trucks in areas with steep grades and signs are posted that instruct drivers to use their flashers if traveling below 50&nbsp;mph (40 if the speed limit is 55). Pennsylvania has no default minimum speed limit on any other roads. However, minimum speed limits on certain highways may be enacted and posted as provided by Section 3364(c) of the Pennsylvania Motor Vehicle Code (Title 75 of the Pennsylvania Consolidated Statutes).<ref name="dmv.state.pa.us">{{Cite web |url = https://www.dmv.pa.gov/Pages/default.aspx/pdotforms/vehicle_code/chapter33.pdf |title = DVS Home |website = www.dmv.pa.gov }}</ref>
§3364(a) also requires, "Except when reduced speed is necessary for safe operation or in compliance with law, whenever any person drives a vehicle upon a roadway having width for not more than one lane of traffic in each direction at less than the maximum posted speed and at such a slow speed as to impede the normal and reasonable movement of traffic, the driver shall, at the first opportunity when and where it is reasonable and safe to do so and after giving appropriate signal, drive completely off the roadway and onto the berm or shoulder of the highway. The driver may return to the roadway after giving appropriate signal only when the movement can be made in safety and so as not to impede the normal and reasonable movement of traffic."
Drivers cannot be stopped by police for driving less than 6&nbsp;mph over the posted speed limit (10&nbsp;mph if the speed limit is less than 55&nbsp;mph and non-radar timing devices are used, as use of radar devices is limited to "members of the Pennsylvania State Police" by §3368c2).<ref>[http://www.motorists.org/chapters/pennsylvania Pennsylvania Motorist Information | National Motorists Association]. Motorists.org.</ref>
In October 2018, Governor [[Tom Wolf]] signed into law a bill authorizing the use of [[Traffic enforcement camera|speed cameras]] in active construction zones on Interstate highways.<ref>{{Cite web |url = http://www.landlinemag.com/story.aspx?storyid=73179 |title = New Pennsylvania law permits use of speed cameras |website = Land Line Magazine |language = en |access-date = February 27, 2019 }}</ref>
==Puerto Rico==
As effectively from the law,<ref name="michie.lexisnexis.com">§ 5122. Maximum lawful speed limits and penalties., Subchapter IV, Chapter 27, Title 9 of the Laws of Puerto Rico [http://michie.lexisnexis.com/puertorico/lpext.dll?f=templates&fn=main-h.htm&cp=prcode] {{Webarchive|url=https://web.archive.org/web/20120211224831/http://michie.lexisnexis.com/puertorico/lpext.dll?f=templates&fn=main-h.htm&cp=prcode|date=February 11, 2012}}</ref> the following speed limits are:
* {{convert|25|mph|km/h|0|abbr=on}} in urban areas.
* {{convert|45|mph|km/h|0|abbr=on}} in rural areas.
* {{convert|65|mph|km/h|0|abbr=on}} in freeways or expressways.
* {{convert|15 to(-) 25|mph|km/h|0|abbr=on}} in urban and rural school zones, when children are present.
Most freeways can have speed limits up to {{cvt|65|mph}}, while other expressways have speed limits up to 55&nbsp;mph. The rural default speed limit is 45&nbsp;mph but may be increased to {{cvt|50|mph}}. In residential areas, only multilane roads have limits up to {{cvt|35|mph}}, other roads are restricted to a maximum speed of {{cvt|25|mph}}. Only urban and rural school zones have limits up to {{cvt|15 to(-) 25|mph}}. Vehicles carrying [[hazardous materials]] are limited to {{cvt|20 to(-) 30|mph}} in urban and rural areas.
==Rhode Island==
Along two-lane roadways, the default speed limit is {{cvt|50|mph}} during the daytime outside a business or residential district. "Daytime" means a half-hour before sunset and a half-hour after sunrise. At night time and also uncommon on the East Coast, the default speed limit is {{cvt|45|mph}} outside a business or residential district. Through the CBD and residential district, the default speed limit is {{cvt|25|mph}}. Through school zones within {{convert|300|feet}}, the default speed limit is {{cvt|20|mph}}. Local governments are barred from raising the default speed limits during the day and at night. Interstates are generally posted at {{cvt|65|mph}} through rural areas, {{cvt|55|mph}} closer to Providence, and as low as {{cvt|45|mph}} through the segment of I-95 known locally as the "Pawtucket 'S'-Curves". Divided arterials and freeways other than Interstate are posted no higher than 55&nbsp;mph. On April 12, 1996, speed limit of 65&nbsp;mph allowed on rural interstates based on engineering studies. However, the only interstates raised to 65&nbsp;mph are [[Interstate 95]] from exits 1–24B and [[Interstate 295 (Rhode Island–Massachusetts)|Interstate 295]].<ref>{{cite web |title = Interstate Highways |url = http://rihighways.tripod.com/intersta.html |publisher = Rhode Island Highways }}</ref>
==South Carolina==
{{Unreferenced section|date=November 2014}}
Interstate speed limits in [[South Carolina]] are posted at {{cvt|70|mph|0}}. Interstates passing through "Urban" areas are dropped to {{cvt|60|mph}}. The urban area assignment of 60&nbsp;mph usually includes the metropolitan area and the actual inner city area. The only exceptions to the rule are [[Interstate 385|I-385]] in [[Greenville, South Carolina|Greenville]], [[Interstate 85|I-85]] in [[Spartanburg, South Carolina|Spartanburg]], the [[South Carolina Highway 31|SC 31]] freeway around [[Myrtle Beach, South Carolina|Myrtle Beach]] and [[Interstate 95 in South Carolina|I-95]] around [[Florence, South Carolina|Florence]]. I-385 has a 55&nbsp;mph speed limit at its terminus within the Greenville area. SC 31 is posted at {{cvt|65|mph|0}} even though it is in the greater Myrtle Beach area. SC 31 was originally posted at 60&nbsp;mph when it was built in 2004. I-95 even as a 6 lane semi-urban built freeway, maintains a 70&nbsp;mph speed limit through the Florence area (as of June 2013, from just south of exit 160 to just south of exit 164, the speed limit has been reduced to 60&nbsp;mph, a textbook speed trap). It is 6 lanes from SC 327 to I-20.
Four-lane arterials by default are posted at {{cvt|60|mph}}. Four-lane bypasses at 60&nbsp;mph can be found in Marion and Sumter, but others remain at {{cvt|55|mph}}. It is not uncommon that 55&nbsp;mph can be expected in more built-up areas prior to municipalities and/or if the engineering on the highway is below standards. However, [[U.S. Route 123]] has a divided segment where the speed limit is {{cvt|65|mph|0}}.
Two-lane roads are 55&nbsp;mph by default. However, a handful of counties maintained as either state secondary roads or county roads are posted at {{cvt|45|mph}}.
Central business districts (CBDs) are posted at {{cvt|30|mph}}. A recent trend is occurring with CBD speed limits that they are being signed at {{cvt|25|mph}} in random municipalities around the state.
Speed limit drops generally are done in 10&nbsp;mph increments but 20&nbsp;mph drops are not uncommon. Improvements in the mid-2000s were done by [[South Carolina Department of Transportation|SCDOT]] to warn motorists ahead of time for speed drops on various roadways. However, there are still some roadways that have not received that treatment. However, there are a couple roadways that get 25&nbsp;mph to 30&nbsp;mph drops as well. The speed limit drops from {{cvt|55|mph}} to {{cvt|25|mph}} at a traffic circle with US 378 and SC 391 in eastern [[Saluda County, SC|Saluda County]]. On US 52 northbound approaching Kingstree, the speed limit drops from {{cvt|60|mph}} to {{cvt|35|mph}}.
==South Dakota==
Shortly after the December 1995 repeal of the 65/55&nbsp;mph [[National Maximum Speed Law]], [[South Dakota]] raised its general rural speed limits to {{cvt|75|mph|0}} on freeways and {{cvt|65|mph|0}} on other roads along with {{cvt|70|mph|0}} on a few 4 lane divided highways. Almost a decade after posting the 75&nbsp;mph limit, average speeds on South Dakotan rural freeways remain at or below the speed limit. In the urban areas of Sioux Falls and Rapid City, a 65&nbsp;mph speed limit is posted on Interstates 90 and 29.<ref>[http://www.sddot.com/pe/data/Docs/SPEED2006.pdf Department of Transportation]. Sddot.com (April 17, 2012).</ref> In March 2015, SD State Legislature has passed the bill to raise the speed limit on Interstate 29 and Interstate 90 to {{cvt|80|mph|0}}. It was signed into law and took effect in April 2015.<ref>{{cite news |url = http://www.argusleader.com/story/news/2015/03/17/mph-speed-limit-gas-tax-hike-signed-law/24924491/ |publisher = Associated Press |date = March 17, 2015 |access-date = March 19, 2017 |title = 80 mph speed limit, gas tax hike signed into law }}</ref> While the 80&nbsp;mph speed limit was initially signed on all rural freeways in the state, the Interstate 90 stretch from Rapid City to the Wyoming Border returned to 75&nbsp;mph due to safety concerns.<ref>{{cite news |url = http://www.mitchellrepublic.com/news/state/3755376-i-90-speed-limit-returns-75-west-rapid-city |date = May 29, 2015 |access-date = March 19, 2017 |last = Mercer |first = Bob |newspaper = The Daily Republic |title = I-90 speed limit returns to 75 west of Rapid City }}</ref>
==Tennessee==
[[File:TN environmental speed limit.png|200px|thumb|right|An "environmental" speed limit along I-75 near [[Loudon, Tennessee]], which was in effect between 2006 and 2018. These were enacted in some of the major metropolitan areas of Tennessee after all of Tennessee's major cities failed to meet the [[Environmental Protection Agency]] (EPA)'s guidelines for air quality.]]
[[Tennessee]] statutes require rural interstates to be posted at exactly {{cvt|70|mph|0}} unless a traffic study is performed indicating that such a speed is unsafe.<ref name="auto">{{cite web |title = Tennessee Code Annotated 2018 |publisher = Justia Law |agency = Justia/Tennessee State Legislature |url = https://law.justia.com/codes/tennessee/2018/title-55/chapter-8/part-1/section-55-8-152/ |access-date = February 22, 2020 }}</ref> These include all of the state's two-digit Interstates except [[Interstate 55 in Tennessee|Interstate 55]] and [[Interstate 26 in Tennessee|Interstate 26]], whose highest posted speed limits for passenger vehicles in Tennessee is {{cvt|65|mph|0}}. The only auxiliary interstates in Tennessee with a 70&nbsp;mph speed limit are [[Interstate 155 (Missouri–Tennessee)|Interstate 155]], [[Interstate 269]], and [[Interstate 840 (Tennessee)|Interstate 840]]. 70&nbsp;mph speed limits are required on other controlled access highways that are part of the State or Federal Highway Systems unless a traffic study indicates this speed is unsafe.<ref name="auto"/> Any other controlled access road in the state may be posted up to 70&nbsp;mph, but this is not a legal requirement, and a study is not required to be performed before this is done. Examples of 70&nbsp;mph limits are found on controlled-access portions of [[U.S. Route 51 in Tennessee|US 51]] and [[Tennessee State Route 22|SR 22]], [[Tennessee State Route 111|SR 111]], [[Tennessee State Route 386|SR 386]], and [[Tennessee State Route 396|SR 396]]. In 70&nbsp;mph zones, the default minimum speed limit is 55.<ref>{{cite book |author = National Highway Traffic Safety Administration |title = Summary of State Speed Laws |edition = 12th |url = https://www.nhtsa.gov/staticfiles/nti/pdf/Summary_State_Speed_Laws_12th_Edition_811769.pdf |publisher = National Highway Traffic Safety Administration |series = DOT HS 811 769 |access-date = August 30, 2022 |date = December 2013 }}</ref> Urban interstates are generally posted at 55 to 65&nbsp;mph, however, portions of Interstates [[Interstate 24|24]], [[Interstate 40 in Tennessee|40]], and [[Interstate 65 in Tennessee|65]] and S.R. 386 in [[Nashville, Tennessee|Nashville]], as well as I-24 in [[Clarksville, Tennessee|Clarksville]]<ref>{{cite web |author = ((Google)) |date = May 2022 |url = https://www.google.com/maps/@36.6245039,-87.3049088,3a,75y,133.35h,86.77t/data=!3m6!1e1!3m4!1sdzFs7UBdbFwXxJ_eLF_1fQ!2e0!7i13312!8i6656 |title = I-24, Clarksville, TN |access-date = August 30, 2022 }}</ref> and [[Murfreesboro, Tennessee|Murfreesboro]]<ref>{{Cite web |author = ((Google)) |date = July 2019 |url = https://www.google.com/maps/@35.8760078,-86.4671339,3a,40.8y,167.34h,90.38t/data=!3m6!1e1!3m4!1sYfBH_QgOsk6nZxHYZe_bGw!2e0!7i16384!8i8192 |title = I-24 Murfreesboro, Tennessee |work = Google Street View |access-date = August 30, 2022 }}</ref> are posted at 70&nbsp;mph. One brief [[Tennessee State Route 100|S.R. 100]] freeway in [[Henderson, Tennessee|Henderson]] has a speed limit of only 50 mph,<ref>{{cite web | url=https://www.google.com/maps/@35.4326775,-88.6376694,3a,30.6y,70h,87.21t/data=!3m7!1e1!3m5!1sPGJWT-qk8WN4p610FyCGOQ!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D2.7881101949488283%26panoid%3DPGJWT-qk8WN4p610FyCGOQ%26yaw%3D69.99860938898219!7i16384!8i8192?entry=ttu&g_ep=EgoyMDI0MTExOS4yIKXMDSoASAFQAw%3D%3D | title=Google Maps }}</ref> as does a [[Tennessee State Route 381|S.R. 381]] freeway in [[Johnson City, Tennessee|Johnson City]],<ref>{{cite web | url=https://www.google.com/maps/@36.3590117,-82.3929639,3a,47.9y,35.46h,88.48t/data=!3m7!1e1!3m5!1sWogSl90YuKzXNeNRttB0kQ!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D1.5217247168376673%26panoid%3DWogSl90YuKzXNeNRttB0kQ%26yaw%3D35.45814231454542!7i16384!8i8192?entry=ttu&g_ep=EgoyMDI0MTExOS4yIKXMDSoASAFQAw%3D%3D | title=Google Maps }}</ref> but both still have signs at every entrance ramp and even the southern end of the latter freeway<ref>{{cite web | url=https://www.google.com/maps/@36.3585252,-82.3933815,3a,75y,44.71h,87.61t/data=!3m7!1e1!3m5!1s3VHoZoT8oMb7dJtdnS9hIg!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D2.39018266519399%26panoid%3D3VHoZoT8oMb7dJtdnS9hIg%26yaw%3D44.70609002506508!7i16384!8i8192?entry=ttu&g_ep=EgoyMDI0MTExOS4yIKXMDSoASAFQAw%3D%3D | title=Google Maps }}</ref> warning that pedestrians, non-motorized traffic and motor driven cycles are prohibited.<ref>{{cite web | url=https://www.google.com/maps/@35.4304785,-88.6433132,3a,35.1y,75.36h,88.65t/data=!3m7!1e1!3m5!1suBjFnfPQDfcNdR35WkHBEg!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D1.3481030524763042%26panoid%3DuBjFnfPQDfcNdR35WkHBEg%26yaw%3D75.3593031420867!7i16384!8i8192?entry=ttu&g_ep=EgoyMDI0MTExOS4yIKXMDSoASAFQAw%3D%3D | title=Google Maps }}</ref><ref>{{cite web | url=https://www.google.com/maps/@35.4309952,-88.6450034,3a,19.2y,267.92h,87.06t/data=!3m7!1e1!3m5!1s4xcgkN4Dz24Zyjsy07JWjQ!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D2.9366674150336536%26panoid%3D4xcgkN4Dz24Zyjsy07JWjQ%26yaw%3D267.92258686192764!7i16384!8i8192?entry=ttu&g_ep=EgoyMDI0MTExOS4yIKXMDSoASAFQAw%3D%3D | title=Google Maps }}</ref><ref>{{cite web | url=https://www.google.com/maps/@36.3614723,-82.3881097,3a,75y,54.65h,87.98t/data=!3m7!1e1!3m5!1sDHgDK2HkgrNRZypcXqUm7w!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D2.0208520876267926%26panoid%3DDHgDK2HkgrNRZypcXqUm7w%26yaw%3D54.648525097750735!7i16384!8i8192?entry=ttu&g_ep=EgoyMDI0MTExOS4yIKXMDSoASAFQAw%3D%3D | title=Google Maps }}</ref><ref>{{cite web | url=https://www.google.com/maps/@36.3632381,-82.3910076,3a,75y,55.36h,87.55t/data=!3m7!1e1!3m5!1sU1tDwRKFhw08ZjUsi4IOqg!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D2.450025626887097%26panoid%3DU1tDwRKFhw08ZjUsi4IOqg%26yaw%3D55.35597108996211!7i16384!8i8192?entry=ttu&g_ep=EgoyMDI0MTExOS4yIKXMDSoASAFQAw%3D%3D | title=Google Maps }}</ref><ref>{{cite web | url=https://www.google.com/maps/@36.3680851,-82.3788359,3a,48.9y,278.75h,93.45t/data=!3m7!1e1!3m5!1s5FseQW0mdrmkPz3zFHd2cA!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D-3.4458291962669705%26panoid%3D5FseQW0mdrmkPz3zFHd2cA%26yaw%3D278.75311474128006!7i16384!8i8192?entry=ttu&g_ep=EgoyMDI0MTExOS4yIKXMDSoASAFQAw%3D%3D | title=Google Maps }}</ref>
Four-lane divided highways in rural areas are normally posted at the statutory {{cvt|65|mph|0}}, although some are posted at {{cvt|55|mph|0}} and {{cvt|60|mph|0}}. It is a common misconception that undivided highways may only be posted up to {{cvt|55|mph}} in Tennessee.<ref>{{cite press release |author = <!--Staff writer(s); no by-line.--> |title = Summary of State Speed Laws |publisher = Internet Speed Limit Database |agency = Speed-Limits.com |url = http://www.speed-limits.com/tennessee.htm |access-date = February 22, 2020 }}</ref> Though a vast majority of undivided highways have, at most, posted 55&nbsp;mph speed limits, Tennessee's statutory speed limits do not differentiate between divided and undivided highways, per TN Code § 55-8-152(a) (2018), so the statutory limit of {{cvt|65|mph|0}} usually applies to undivided highways in the absence of signage or local ordinances to the contrary.<ref>{{cite web |title = Tennessee Code Annotated 2018 |publisher = Justia Law |agency = Justia/Tennessee State Legislature |url = https://law.justia.com/codes/tennessee/2018/title-55/chapter-8/part-1/section-55-8-152/ |access-date = February 22, 2020 }}</ref> Notable examples of 65&nbsp;mph undivided highways are multiple stretches [[Tennessee State Route 22|SR 22]] surrounding the town of [[Dresden, Tennessee|Dresden]], where the road has two lanes in each direction (four lanes total), sometimes containing a central dual turn lane,<ref>{{cite web |author = ((Google)) |date= February 2016 |title = 6525 TN-22 Dresden, Tennessee |work = Google Street View |url = https://www.google.com/maps/@36.2637903,-88.6536653,3a,37.5y,156.88h,84.12t/data=!3m6!1e1!3m4!1sesHb7SLEBIyxL0YnZjHvqQ!2e0!7i13312!8i6656 |access-date = February 22, 2020 }}</ref> and a bridge on [[U.S. Route 64]] between [[Somerville, Tennessee|Somerville]] and [[Laconia, Tennessee|Laconia]] that briefly becomes undivided but maintains the highway's usual 65 mph speed limit.<ref>{{cite web | url=https://www.google.com/maps/@35.2656859,-89.2657368,3a,60y,55.39h,91.01t/data=!3m6!1e1!3m4!1sOJB2rGFG_G0WnBgl82q0_A!2e0!7i16384!8i8192?entry=ttu | title=Google Maps }}</ref> [[U.S. Route 412]] also contains a 60&nbsp;mph four-lane undivided highway between [[Columbia, Tennessee|Columbia]] and [[Hohenwald, Tennessee|Hohenwald]], as does [[Tennessee State Route 52]] between Livingston and Celina.<ref>{{Cite web |author = ((Google)) |date = April 2018 |title = 1808 TN-99 Hohenwald, Tennessee |url = https://www.google.com/maps/@35.5627952,-87.38545,3a,49.9y,111.75h,85.17t/data=!3m6!1e1!3m4!1s2ToRC0zHT4nNjQCeWDheFQ!2e0!7i13312!8i6656 |work = Google Street View |access-date = August 30, 2022 }}</ref><ref>{{cite web | url=https://www.google.com/maps/@36.4037459,-85.3306805,3a,75y,351.39h,90t/data=!3m7!1e1!3m5!1sH5GSMFDlZuguc7UmLF9Mig!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3DH5GSMFDlZuguc7UmLF9Mig%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D353.0512%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192!5m1!1e4?entry=ttu | title=Google Maps }}</ref>
Speed limits set by municipalities could range from 15 to 55&nbsp;mph, depending on the type of roadway. This is because the state of Tennessee grants strong [[Home Rule in the United States|home rule]] powers to municipalities and [[John Forrest Dillon|Dillon's Rule]] for unincorporated areas in the county for speed limit assignments on non-controlled access state-maintained roads, requiring that they fall within established constraints.<ref name=code>{{cite web |url = https://www.lawserver.com/law/state/tennessee/tn-code/tennessee_code_55-8-152 |title = Terms Used In Tennessee Code 55-8-152 |author = <!--Not stated--> |date = 2010 |website = lawserver.com |publisher = Lawserver |access-date = January 27, 2018 }}</ref> Out of Tennessee's {{convert|95,523|miles}} of public road, a vast majority of {{convert|81,639|miles}} are maintained by localities.<ref>{{cite web |title = Tennessee Road Case Study |date = June 6, 2014 |agency = U.S. Department of Transportation |url = https://safety.fhwa.dot.gov/rsdp/downloads/tncasestudy.pdf |access-date = February 22, 2020 }}</ref>
In the 2000s, the major cities of [[Memphis, Tennessee|Memphis]], [[Knoxville, Tennessee|Knoxville]] and [[Chattanooga, Tennessee|Chattanooga]] petitioned TDOT to enact environmental speed limits in their respective counties after failing to meet [[US Environmental Protection Agency|EPA]] air quality standards, reducing speed limits from 70&nbsp;mph to 65&nbsp;mph and 55&nbsp;mph for trucks.<ref>{{cite news |last = Wilson |first = John |date = February 8, 2005 |title = Truck Speed Lowered To 55 MPH In Hamilton County |url = http://www.chattanoogan.com/2005/2/8/62265/Truck-Speed-Lowered-To-55-MPH-In.aspx |work = [[Chattanoogan]] |access-date = November 3, 2017 }}</ref><ref>{{cite news |last = Osborne |first = J.H. |date = January 31, 2007 |title = TDOT lowers I-26, I-81 speed limits in Sullivan |url = http://www.timesnews.net/News/2007/01/31/TDOT-lowers-I-26-I-81-speed-limits-in-Sullivan |work = [[Kingsport Times-News]] |access-date = November 3, 2017 }}</ref><ref>{{cite news |last = Maki |first = Amos |date = March 13, 2005 |title = TDOT to lower county speed limit |url = https://www.bizjournals.com/memphis/stories/2005/03/14/story7.html |work = [[Memphis Business Journal]] |access-date = November 3, 2017 }}</ref> [[Knox County, Tennessee|Knox County]] (Knoxville) also petitioned the state to enact these speed limits in all of the neighboring counties of the [[Knoxville Metropolitan Area]], as well as [[Jefferson County, Tennessee|Jefferson County]].<ref>{{cite news |author = <!--Staff writer(s); no by-line.--> |title = Tennessee reduces truck, four-wheeler speeds on key roads |url = http://www.landlinemag.com/story.aspx?storyid=48979#.WfxO2mhSxPY |work = Landline Magazine |date = April 21, 2006 |access-date = November 3, 2017 |url-status = dead |archive-url = https://web.archive.org/web/20181104050313/http://www.landlinemag.com/story.aspx?storyid=48979#.W959mEX7Tcs |archive-date = November 4, 2018 }}</ref> These moves were controversial, as people believed the actual purpose was to increase revenue from [[speeding ticket]]s, and the [[Tennessee Highway Patrol]] (THP) reportedly started enforcing these as 70&nbsp;mph zones in the Knoxville area after multiple truckers successfully won court cases and had their tickets dismissed. In 2018, these split speed limits on I-75 and I-40 in [[Roane County, Tennessee|Roane]] and [[Loudon County, Tennessee|Loudon]] counties southwest of Knoxville were increased back to 70.{{citation needed|date=December 2015}} On February 19, 2019, 70&nbsp;mph speed limit signs were installed on I-40 and I-81 east of Knox County starting at exit 398,{{citation needed|date=November 2019}} and in October 2019, the last of these split speed limits were increased to 70&nbsp;mph on I-40 east of Knoxville and to 65&nbsp;mph west of Knoxville with no separate restrictions for trucks.<ref>{{cite news |last = Fisher |first = Tyson |date = October 30, 2019 |title = Speed limits increase, split speeds eliminated in Knoxville, Tenn., area |url = https://landline.media/speed-limits-increase-split-speeds-eliminated-in-knoxville-tenn-area/ |work = Landline Magazine |access-date = November 17, 2019 }}</ref> In Nashville, speed limits for freeways are posted at 55&nbsp;mph at the center of the city, and 65 and 70&nbsp;mph beyond, with no separate restrictions for trucks.{{citation needed|date=September 2017}}  I-26 and I-81 in Kingsport, Bristol, and Johnson City continue with the staggered limits.
Prior to 1974, the maximum speed limit on Tennessee's Interstate highways was {{cvt|75|mph|0}} day or night for cars and {{cvt|65|mph|0}} day or night for trucks. Other rural highways had a maximum speed limit of 65&nbsp;mph day and {{cvt|55|mph|0}} night for divided highways and 55&nbsp;mph for all other highways. Many of these other class roadways also had separate day and night speed limits as well.{{citation needed|date=December 2015}}
==Texas==
[[File:Texas speed limit 70 65.JPG|thumb|Typical Texas rural speed limit sign before September 2011. Note the black backgrounded 65 mph night speed limit sign, which was common on Texas roads. (No other state had a universal [[Speed limits in the United States#Texas 2|night speed limit]].) This sign is on southbound U.S. [[U.S. Route 69|69]]/[[U.S. Route 96|96]]/[[U.S. Route 287|287]] just north of [[Beaumont, Texas|Beaumont]]. Note that night speed limits have been abolished since this photo was taken.]]
[[Texas]] is the only state that does not prescribe a different speed limit for each road type in its state or federal highway system. Texas law generally prescribes a statutory speed limit of {{cvt|70|mph|0}} for any rural road that is maintained by the [[state highway|state government]] (including [[United States Numbered Highways]] and [[Interstate Highway]]s)—whether two lane, four lane, freeway, or otherwise—{{cvt|60|mph|0}} for roads outside an urban district that are not state-maintained highways, and {{cvt|30|mph|0}} for streets in an urban district.<ref>Texas Statutes, Transportation Code, [http://www.statutes.legis.state.tx.us/Docs/TN/htm/TN.545.htm#545.352 § 545.352. Prima Facie Speed Limits]</ref>
The law allows raising or lowering the statutory limit only if an engineering and traffic investigation indicates that a different limit is appropriate.<ref name="capitol2">[http://www.statutes.legis.state.tx.us/Docs/TN/htm/TN.545.htm#545.353 Transportation Code Chapter 545. Operation and Movement of Vehicles]. Statutes.legis.state.tx.us.</ref> Texas allows a speed limit of up to {{convert|75|mi/h|km/h|0}} to be posted on federal or state highways,<ref name="capitol2"/> city maintained roads,<ref>[http://www.statutes.legis.state.tx.us/Docs/TN/htm/TN.545.htm#545.356 Transportation Code Chapter 545. Operation and Movement of Vehicles]. Statutes.legis.state.tx.us.</ref> and toll roads,<ref name="statutes.legis.state.tx.us">[http://www.statutes.legis.state.tx.us/Docs/TN/htm/TN.545.htm#545.354 Transportation Code Chapter 545. Operation and Movement of Vehicles]. Statutes.legis.state.tx.us.</ref> and up to {{convert|70|mi/h|km/h|0}} on county roads.<ref>[http://www.statutes.legis.state.tx.us/Docs/TN/htm/TN.545.htm#545.355 Transportation Code Chapter 545. Operation and Movement of Vehicles]. Statutes.legis.state.tx.us.</ref><ref>{{cite web |title = H.B. No. 1607 |publisher = Texas Legislature |date = May 20, 2013 |url = http://www.legis.state.tx.us/tlodocs/83R/billtext/html/HB01607F.htm }}</ref> Through a [[#80 and 85 mph limits|separate provision]], speed limits up to {{cvt|80|mph|0}} or {{cvt|85|mph|0}} can be established on certain highways.
===Truck speed limits===
[[File:I-20 eastbound, 7 miles west of Pecos.jpg|thumb|left|Example of 70 mph truck speed limit sign immediately behind an 80 mph speed limit sign, before truck speed limits were abolished]]
Texas once had separate, systemwide truck speed limits, but they were repealed in 1999 and 2011.
The truck speed limit used to be {{convert|60|mph|km/h|0|abbr=on}} day/{{convert|55|mph|km/h|0|abbr=on}} night when the regular limit was higher. This speed limit did not apply to buses or to trucks transporting [[United States Postal Service]] mail.
Truck speed limits disappeared when all speed limits were capped at {{convert|55|mph|km/h|0|abbr=on}} in 1974. They reappeared with the introduction of {{convert|65|mph|km/h|0|abbr=on}} limits in 1987.
Effective September 1, 1999, Texas repealed truck speed limits on all roads except [[Farm to Market Road|farm to market and ranch to market]] roads.<ref>[http://www.landlinemag.com/Archives/1999/august99/legislative_news.html Land Line Magazine: The Business Magazine for Professional Truckers]. Landlinemag.com.</ref><ref>[http://www.capitol.state.tx.us/BillLookup/History.aspx?LegSess=76R&Bill=HB676 Texas Legislature Online – 76(R) History for HB 676]. Capitol.state.tx.us.</ref>
In 2001, a bill allowing 75&nbsp;mph speed limit on roads in certain counties excluded trucks, introducing a 70&nbsp;mph truck speed limit on roads with a higher limit.<ref>[http://www.capitol.state.tx.us/BillLookup/History.aspx?LegSess=77R&Bill=HB299 Texas Legislature Online – 77(R) History for HB 299]. Capitol.state.tx.us.</ref> A bill in 2005 allowing 80&nbsp;mph speed limits still excluded trucks.<ref>{{cite web |title = H.B. No. 2257 |publisher = Texas Legislature |url = http://www.legis.state.tx.us/tlodocs/79R/billtext/html/HB02257F.htm }}</ref> However, truck speed limits were fully repealed in 2011.<ref name="capitol.state.tx.us"/>
===Night speed limits===
Before September 1, 2011, Texas had a statutory {{convert|65|mph|km/h|0|abbr=on}} night speed limit on all roads with a higher daytime limit. In 2011, the Texas Legislature banned night speed limits effective September 1, 2011.<ref name="capitol.state.tx.us">[http://www.capitol.state.tx.us/BillLookup/History.aspx?LegSess=82R&Bill=HB1353 Texas Legislature Online – 82(R) History for HB 1353]. Capitol.state.tx.us.</ref> However, as of June 2013, night speed limits (55) were retained on some county roads where the speed limit is 60&nbsp;mph in [[Scurry County]], just outside of [[Snyder, Texas]].
===Environmental speed limits===
[[File:55 mph speed limit 004 (crop).jpg|thumb|55 mph speed limit signs photographed on August 20, 2002. These signs were on southbound I-45 at the north border of [[Montgomery County, Texas|Montgomery County]]. Immediately before this point, the speed limit was 70 mph. These were part of an unpopular 55 mph speed limit cap in the Houston–Galveston area.]]
[[File:Montgomery County Line 65 MPH.JPG|thumb|Same location as prior picture with the more recent 65 mph speed limit, photographed on August 4, 2005]]
Texas is the first state to lower speed limits for air quality reasons, although the lowered limits may not meaningfully improve air quality.
In roughly a {{convert|50|mi|km|adj=on}} radius of the [[Houston]]–[[Galveston, Texas|Galveston]] and [[Dallas]]–[[Fort Worth, Texas|Ft. Worth]] regions, the [[Texas Commission on Environmental Quality]] convinced<ref>{{cite web |url = http://www.dot.state.tx.us/tdotnews/trnscrpt/2000/0500trns.htm |title = Texas Transportation Commission meeting minutes |date = May 25, 2000 |access-date = July 24, 2007 |work = Texas Department of Transportation }} Search for words "environmental speed limits", and refer to the paragraphs containing the first instance of the word and subsequent paragraphs.</ref> the [[Texas Department of Transportation]] to reduce the speed limit on all roads with {{convert|70|or|65|mph|km/h|0|abbr=on}} speed limits by 5&nbsp;mph.<ref>{{cite web |title = Speed Limit Reduction |publisher = Texas Natural Resource Conservation Commission |url = http://www.tnrcc.state.tx.us/oprd/sips/speedlimit.html |archive-url = https://web.archive.org/web/20050914153755/http://www.tnrcc.state.tx.us/oprd/sips/speedlimit.html |archive-date = September 14, 2005 }} <!-- Please change all TNRCC citations to those of TCEQ--></ref> This was instituted as part of a plan to reduce smog-forming emissions in areas out of compliance with the federal [[Clean Air Act (United States)|Clean Air Act]].<ref>[http://www.tceq.state.tx.us/implementation/air/sip/speedlimit.html Vehicular Speed-Limit Reduction – Texas Commission on Environmental Quality] {{webarchive|url=https://web.archive.org/web/20100126004805/http://www.tceq.state.tx.us/implementation/air/sip/speedlimit.html |date=January 26, 2010}}. tceq.state.tx.us.</ref>
Initial studies found that lower speed limits could provide roughly 1.5% of the emissions reductions required for Clean Air Act compliance.<ref>[http://people.smu.edu/acambre/esl-nctcog.htm Effectiveness of ESLs]. People.smu.edu (January 2, 2003).</ref> However, follow-up studies found that the actual reduction is far less:
# The emissions modeling software initially used, MOBILE 5a, overestimated the emissions contribution of speed limit reductions. Rerunning the models with the next generation software, MOBILE 6, produced dramatically lower emissions reductions.
# Speed checks in the Dallas area performed 1 year after implementation of speed limit reductions show that actual speed reductions are only about 1.6&nbsp;mph, a fraction of the anticipated 10% (5.5&nbsp;mph) speed reduction.
With both of these facts combined, it is possible that the speed limit reductions only provide a thousandth of the total emissions reductions necessary for Clean Air Act compliance.<ref>[http://people.smu.edu/acambre/eslEPA102402.htm Letter to EPA about Environmental Speed Limits]. People.smu.edu (October 24, 2002).</ref>
In mid-2002, all speed limits in the Houston–Galveston area were capped at {{convert|55|mph|km/h|0|abbr=on}}.<ref>{{cite web |title = SIP Revisions - Houston/Galveston, December 2000 |publisher = Texas Natural Resources Conservation Commission |url = http://www.tnrcc.state.tx.us/oprd/sips/dec2000hga.html |archive-url = https://web.archive.org/web/20050205075512/http://www.tnrcc.state.tx.us/oprd/sips/dec2000hga.html |archive-date = February 5, 2005 }}</ref> Facing immense opposition,<ref>[http://www.ghasp.org/publications/55chronicle.html Air Alliance Houston] {{Webarchive|url=https://web.archive.org/web/20130412020916/http://www.ghasp.org/publications/55chronicle.html |date=April 12, 2013}}. Ghasp.org.</ref><ref>[http://www.heartland.org/Article.cfm?artId=1097 Scientist testifies against 55 mph speed limit – by Environment & Climate News staff – The Heartland Institute]. Heartland.org.</ref> poor compliance,<ref>{{Cite web |url = http://tti.tamu.edu/cts/cts/organization/policy_initiatives_analysis/projects/pid_houston.stm |archive-url = https://web.archive.org/web/20060206192541/http://tti.tamu.edu/cts/cts/organization/policy_initiatives_analysis/projects/pid_houston.stm |url-status = dead |title = TTI: Groups |archive-date = February 6, 2006 }}</ref> and the finding that lowered speed limits produced only a fraction of the originally estimated emissions reductions,<ref>[http://yosemite1.epa.gov/r6/press.nsf/0/b7d1c1828ed43ff586256c67005d51c4?OpenDocument EPA Region 6 News Release: Speed Limits in Houston/Galveston Area May Be Increased 11/04/2002] {{webarchive |url=https://web.archive.org/web/20070213075342/http://yosemite1.epa.gov/r6/press.nsf/0/b7d1c1828ed43ff586256c67005d51c4?OpenDocument |date=February 13, 2007}}</ref> the TCEQ relented and reverted to the 5&nbsp;mph reduction scheme.<ref>{{cite web |title = SIP Revision - Houston/Galveston, Dec 13, 2002 |publisher = Texas Natural Resource Conservation Commission |url = http://www.tnrcc.state.tx.us/oprd/sips/dec2002hga.html |archive-url = https://web.archive.org/web/20050308060108/http://www.tnrcc.state.tx.us/oprd/sips/dec2002hga.html |archive-date = March 8, 2005 }}</ref>
Due to its enormous unpopularity, the Texas Commission on Environmental Quality examined alternatives to the 55&nbsp;mph speed cap. Analysis suggested that the vast majority of emissions reductions were from reduced heavy truck emissions. A proposed alternative was to restore passenger vehicle limits but retain a 55&nbsp;mph truck speed limit. Concerns about safety problems and enforceability of such a large differential (up to 15&nbsp;mph on many roads) scuttled that proposal, and a compromise plan, described above, was enacted that retained uniform, but still reduced, speed limits.
In 2003, the [[Texas Legislature]] prospectively banned environmental speed limits, effective September 1, 2003. The wording of the bill allows environmental speed limits already in place to remain, but no new miles of roadway may be subjected to environmental speed limits.<ref>;[http://www.dfwinfo.com/trans/env_speed_limits/ North Central Texas Council of Governments – NCTCOG.org<!-- Bot generated title -->]</ref>
===Elimination of Dallas-Fort Worth region environmental speed limits===
In 2009, the [[North Texas Tollway Authority]] raised the speed limit by 10&nbsp;mph on two tollways. Several miles of these tollways had 60&nbsp;mph environmental speed limits.<ref>[http://www.ntta.org/NR/rdonlyres/60659628-D501-4A53-842A-79C81A6C4D72/0/SpeedLimits_raisedonPGBTDNT_FAQ.pdf North Texas Tollway Authority] {{Webarchive|url=https://web.archive.org/web/20120302111534/http://www.ntta.org/NR/rdonlyres/60659628-D501-4A53-842A-79C81A6C4D72/0/SpeedLimits_raisedonPGBTDNT_FAQ.pdf |date=March 2, 2012}}. NTTA.</ref> These new 70&nbsp;mph limits exceeded what is allowable under the environmental speed limit regime.{{#tag:ref|For clarity, Texas's environmental speed limits (ESLs) or their prospective ban did not apply to a substantial portion of NTTA roadways. Many miles of NTTA roadways never were subjected to ESLs because either 1. they never had a 65 mph or higher limit or 2. the road first opened after ESLs were repealed. If both were not the case, then the road segment had an ESL, and the prospective ban would have retained the ESL indefinitely.|group="Note" |name="NTTA"}} NTTA was allowed to raise the speed limits by offsetting the higher limits' theoretical emissions increases with other transportation-related emissions reduction measures, including implementation of all-electronic tolling, which eliminated the need for some vehicles to stop at a toll booth.<ref>[http://www.ntta.org/NR/rdonlyres/D3CC0131-2958-463C-92B6-AAA1EF4CE202/0/20090810speedlimits.pdf North Texas Tollway Authority] {{Webarchive|url=https://web.archive.org/web/20120302111545/http://www.ntta.org/NR/rdonlyres/D3CC0131-2958-463C-92B6-AAA1EF4CE202/0/20090810speedlimits.pdf |date=March 2, 2012}}. NTTA.</ref>
In 2015, the [[Texas Department of Transportation]] cancelled all remaining environmental speed limits in the Dallas-Fort Worth region. Some speed limits were changed back to those in place before the environmental speed limits were enacted. On some roads the speed limit was not changed. On other roads, including some that never had environmental speed limits, speed limits were raised higher than they were before the environmental speed limits were enacted.<ref>{{cite web |publisher = Texas Transportation Commission |title = Minute Order |author = Carol Rawson |date = January 29, 2015 |url = http://ftp.dot.state.tx.us/pub/txdot/commission/2015/0129/14g.pdf }}{{page needed|date=December 2015}}</ref>
===75 mph limits===
Because Texas law allows {{cvt|75|mph|0}} speed limits on any numbered state highway, city maintained road, or tollway, it is the only state with 75&nbsp;mph limits on two-lane roads. Speed studies undertaken by TxDOT in response to legislation passed in 2011 took about 2 years, and the result is that the mileage of highway with a speed limit of 75&nbsp;mph has increased from about 1,400 to about 19,000.<ref>TxDOT Commission meetings [http://www.txdot.gov/inside-txdot/administration/commission/2012-meetings.html see speed zone minute orders in monthly agendas]</ref> 70&nbsp;mph or lower speed limits have become unusual on rural Texas roads. Also, there are multiple urban Interstates and tollways in Texas where there is a 75&nbsp;mph speed limit, such as [[Interstate 20 in Texas|I-20]] in Odessa and [[Midland, Texas|Midland]] (prior to February 2016; it is now 65&nbsp;mph on I-20 in Odessa-Midland), [[Interstate 10 in Texas|I-10]] in the outer parts of [[San Antonio]], and several managed toll lanes in the DFW area.
===80 and 85 mph limits===
[[File:Texas 80 mph speed limit unveiling.JPG|thumb|Texas Legislator [[Pete Gallego]] unveiling a new 80 mph speed limit sign on [[Interstate 10 in Texas|Interstate 10]] near [[Fort Stockton, Texas]]. Note that night speed limits have been abolished since this photo was taken.]]
Texas statutorily allows {{cvt|80|mph|0}} speed limits on [[Interstate 10 in Texas|I-10]] and [[Interstate 20 in Texas|I-20]] in certain counties named in the statute, each of which has a low population density.<ref name="capitol2"/> Separately, the [[Texas Transportation Commission]] may set a speed limit up to {{cvt|85|mph|0}} on any part of the state highway system if that part is "designed to accommodate travel at that established speed or a higher speed" and an "engineering and traffic investigation" determines the speed is "reasonable and safe".<ref name="txhb1201">[http://www.legis.state.tx.us/BillLookup/History.aspx?LegSess=82R&Bill=HB1201 82(R) History for HB 1201]. Texas state legislature.</ref>
As of now, the roads with an 80&nbsp;mph limit are:
* I-10 between mile 61.8 in [[Hudspeth County, Texas|Hudspeth County]] and mile 494 in [[Kerr County, Texas|Kerr County]]<ref name="TxDOT Odessa District News Release">{{Cite web |url = http://www.txdot.gov/oda/newsrel/026%2D2006.htm |archive-url = https://web.archive.org/web/20120215094813/http://www.txdot.gov/oda/newsrel/026%2D2006.htm |url-status = dead |title = TxDOT Odessa District News Release |archive-date = February 15, 2012 }}</ref>
* I-20 between mile 0 in [[Reeves County, Texas|Reeves County]] and mile 89 in [[Ward County, Texas|Ward County]] .<ref name="TxDOT Odessa District News Release"/>
* [[Texas State Highway 45|State Highway 45]] South from the northern junction with US 183 to the southern junction with I-35 in [[Travis County, Texas|Travis County]].<ref name="txdot.gov">[http://www.txdot.gov/driver/laws/speed-limits/approved.html Speed Limits - 75 and 80 Mile Per Hour]. Txdot.gov.</ref><ref>{{cite news |first = Wells |last = Dunbar |url = https://www.npr.org/local/stories/KUT/149636631 |title = Two Highways You'll Soon Be Able to Drive 80 mph On |publisher = [[KUT|KUT-FM]] |location = Austin, Texas |date = March 29, 2012 |access-date = March 30, 2012 }}</ref> SH 45 North from the northern terminus of its concurrency with SH 130 to the northern junction with US 183 near the Travis/[[Williamson County, Texas|Williamson County]] border remains at 75&nbsp;mph.
* [[Texas State Highway 130|State Highway 130]] from I-35 north of [[Georgetown, Texas|Georgetown]] to the northern terminus of its concurrency with US-183 south of [[Austin, Texas|Austin]].  However, there is an 85&nbsp;mph speed limit on a {{convert|41|mile|adj=on}} portion from the northern terminus of its concurrency with US 183 southward to I-10 near [[Seguin, Texas|Seguin]].<ref>[http://www.wfaa.com/news/local/168753976.html Texas in November to open 85 mph toll way | wfaa.com Dallas – Fort Worth] {{Webarchive|url=https://web.archive.org/web/20140201190944/http://www.wfaa.com/news/local/168753976.html |date=February 1, 2014}}. Wfaa.com (September 6, 2012).</ref><ref name=":0">{{cite news |date=October 24, 2012 |title=Nation's fastest road to open in Central Texas |url=http://abclocal.go.com/ktrk/story?section=news/state&id=8858056 |access-date=October 24, 2012 |publisher=[[KTRK-TV]] |location=Houston}}{{dead link|date=July 2024|bot=medic}}{{cbignore|bot=medic}}</ref>
==US Virgin Islands==
For "motorcars, pick-up trucks, or motorcycles", the fastest speed limit in [[United States Virgin Islands|this territory]] is {{cvt|55|mph|0}} and is found on one road, the divided highway and freeway known as the [[Melvin H. Evans Highway]] on the island of [[St. Croix]]. Outside of towns, these vehicles are limited to {{cvt|35|mph|0}} unless posted lower, except on the above-mentioned [[divided highway]] and parts of Centerline Road, which is limited to {{cvt|40|mph|0}}. Within towns, these vehicles are limited to {{cvt|20|mph|0}}.<ref name="ReferenceA">Section 494. speed limits, Chapter 43, Part II, Title 20 of the Virgin Islands Code [http://michie.lexisnexis.com/virginislands/lpext.dll?f=templates&fn=main-h.htm&cp=] {{Webarchive|url=https://web.archive.org/web/20120211224840/http://michie.lexisnexis.com/virginislands/lpext.dll?f=templates&fn=main-h.htm&cp=|date=February 11, 2012}}</ref>
"Motor trucks and buses" are limited to {{cvt|40|mph|0}} on St. Croix's main divided highway, {{cvt|30|mph|0}} on other highways outside of towns, and {{cvt|15|mph|0}} within towns.<ref name="ReferenceA"/>
==Utah==
<!-- Image with unknown copyright status removed: [[File:Utahtest.jpg|right|300px|Signs informing drivers that they are leaving an 80 mph test zone. There are currently{{when?|date=March 2015}} three sections of [[I-15]] in Utah testing the 80 mph speed limit.]] -->
[[File:JuabCountyUtahEightyMPHSpeedLimitSign.jpg|thumb|right|250px|80 miles per hour speed limit sign on [[Interstate 15]] south of [[Nephi, Utah]]]]
In [[Utah]], there is a minimum speed limit of {{cvt|45|mph|0}} on [[Interstate Highway]]s when conditions permit. The maximum speed limit on Interstates is normally {{cvt|70|mph|0}} in cities and, on most highways, {{cvt|80|mph|0}} elsewhere. UDOT has now implemented HB83, raising the speed limit to 80&nbsp;mph on an additional {{convert|289|miles}} of rural interstate, including I-80 from Nevada to mile marker 99, I-84 from Idaho to I-15, and I-15 between [[St. George, Utah]] and [[Mona, Utah]].{{citation needed|date=August 2022}}
* Although 80&nbsp;mph is posted on most interstates, some stretches of [[Interstate 80 in Utah|I-80]] and [[Interstate 84 (west)|I-84]] are posted at 70&nbsp;mph east of [[Salt Lake City]]. I-80 is briefly posted 65&nbsp;mph/truck speed: 55 between [[U.S. Route 40 in Utah|US 40]] and [[Wanship, Utah|Wanship]]. Speeds between Salt Lake City and [[Park City, Utah|Park City]] on I-80 are variable based on road conditions.<ref>{{Cite web |url = https://blog.udot.utah.gov/2014/01/variable-speed-limit-signs-now-activated-on-i-80/ |title = Variable Speed Limit Signs Now Activated on I-80 – Transportation Blog }}</ref>
* The speed limit from [[Ogden, Utah|Ogden]] to [[Spanish Fork, Utah|Spanish Fork]] on [[Interstate 15|I-15]] is 70&nbsp;mph. From Mona south until [[Cedar City, Utah|Cedar City]], excluding curvy sections and mountain passes, the speed limit is 80 miles per hour. Excluding a rural break in [[Iron County, Utah|Iron]] and [[Washington County, Utah|Washington]] counties, the speed limit on I-15 in the urban areas of [[Washington, Utah|Washington]] and St. George is 70 miles per hour until the southern border of [[Arizona]]. The speed limit on I-15 in Cedar City is 75 miles per hour.
* The [[Legacy Parkway]], running between [[North Salt Lake, Utah|North Salt Lake]] and [[Farmington, Utah|Farmington]], originally had a speed limit of {{cvt|55|mph|0}} along its entire length due to environmental concerns at the time of its construction. In January 2020, upon expiration of the law requiring the 55&nbsp;mph limit, it was raised to {{cvt|65|mph|0}}.
===80 mph speed limit===
On April 3, 2013, [[Utah Department of Transportation]] spokesman John Gleason said "We’d only do it in a situation that would make sense: flat, straight roadways. The Utah Department of Transportation is looking at expanding zones where it can increase the speed limit from 75 to 80 miles per hour. The Utah State Legislature recently approved a bill allowing for a series of zones to become permanent, as well as expanding them in other places around the state. UDOT began a study on Monday (April 1, 2013) to place more zones on rural parts of I-15, I-80 and I-84. The areas under consideration, UDOT spokesman said, are on I-80 from Grantsville (exit 99) to Wendover, on the Utah-Nevada border; I-84 from Tremonton to the Utah-Idaho border; I-15 from Brigham City (North interchange) to the Utah-Idaho border; and I-15 from Santaquin to North Leeds." The speed limit on these sections has been increased from 80&nbsp;mph as of September 17, 2013.
On February 13, 2014, UDOT voted to increase the speed limit on [[Interstate 80|I-80]] from Salt Lake City across the [[Bonneville Salt Flats]] to the Nevada border to {{cvt|80|mph|0}}. The change went into effect on July 1, 2014.<ref name="Bill will add more 80 mph speed limit areas in Utah">{{cite news |title = Bill will add more 80 mph speed limit areas in Utah |url = http://www.standard.net/stories/2014/02/13/bill-will-add-more-80-mph-speed-limit-areas-utah |newspaper = Standard Examiner |access-date = February 13, 2014 }}</ref> By July 1, 2014, the state raised the speed limit on all rural interstates in Utah to 80&nbsp;mph except I-80 from the [[Wyoming]] border to Salt Lake City, on I-84 from its junction with I-80 to [[Ogden, Utah|Ogden]] and on twisty sections of [[Interstate 70]] from its I-15 junction to the [[Colorado]] border (the speed limit on I-70 still varies between 60&nbsp;mph and 80&nbsp;mph depending on the topography of the section of freeway.).<ref>{{cite news |title = Utah adds 289 miles of roads with 80 mph speed limits |url = http://www.sltrib.com/sltrib/politics/56883181-90/already-driving-hull-limits.html.csp |newspaper = The Salt Lake Tribune |access-date = September 17, 2013 }}</ref> The speed limit on every other highway is 55&nbsp;mph unless otherwise posted, although several two-lane, undivided roads have 65&nbsp;mph speed limits, with divided sections of [[U.S. Route 40]] and [[U.S. Route 189]] posted at 65&nbsp;mph as well.
By the end of 2016, UDOT raised speed limits to 80&nbsp;mph on additional sections of [[Interstate 15|I-15]] and [[Interstate 70|I-70]].<ref>{{cite news |last = Lee |first = Jasen |url = https://www.ksl.com/?sid=42330346&nid=148 |publisher = KSL.com |date = November 24, 2016 |access-date = March 19, 2017 |title = UDOT to raise speed limits in rural areas of I-15 and I-70 }}</ref>
==Vermont==
The standard speed limit in [[Vermont]] stands at {{cvt|50|mph|0}}. This is applied to rural two-lane roads. On urban freeways, divided at-grade expressways, and rural [[Two-lane expressway|two-lane limited access roads]], the speed limit is {{cvt|55|mph|0}}, such as on I-189 and Interstate 89 in Burlington, and US Route 7 and Vermont State Route 279 outside of Bennington. Rural freeways are posted at {{cvt|65|mph|0}}. Furthermore, the speed limit drops from 65&nbsp;mph on rural highways to {{cvt|40|mph|0}} at the approach to the Canada–US border on Interstates 89 and 91, at Highgate and Derby Line, respectively. In school zones, the speed limit can range from {{cvt|20|mph|0}} to {{cvt|25|mph|0}}, depending on local authority. The minimum speed is defined at {{cvt|40|mph|0}} only on Interstate highways. That includes where the limit is posted at 55 and 65&nbsp;mph. However, as old signs are being replaced, the "40 MINIMUM" is being phased out, keeping only "SPEED LIMIT 65".
==Virginia==
A [[Virginia]] statute provides that the default speed limit "shall be 55 mph on interstate highways or other limited access highways with divided roadways, nonlimited access highways having four or more lanes, and all state primary highways."<ref name="ReferenceB">[https://law.lis.virginia.gov/vacode/46.2-870/ Va. Code § 46.2-870, "Maximum speed limits generally"]. Leg1.state.va.us.</ref> "The maximum speed limit on all other highways shall be 55 miles per hour if the vehicle is a passenger motor vehicle, bus, pickup or panel truck, or a motorcycle, but 45 mph on such highways if the vehicle is a truck, tractor truck, or combination of vehicles designed to transport property, or is a motor vehicle being used to tow a vehicle designed for self-propulsion, or a house trailer."<ref name="leg1.state.va.us">[https://law.lis.virginia.gov/vacode/46.2-870/ ''Id.'']. Leg1.state.va.us.</ref>
The same statute contains a number of exceptions, however, allowing higher speed limits "where indicated by lawfully placed signs, erected subsequent to a traffic engineering study and analysis of available and appropriate accident and law-enforcement data".<ref name="leg1.state.va.us"/> This provision allows speed limits of up to {{cvt|70|mph|0}} on Interstate highways; multilane, divided, limited-access highways; and express or [[high-occupancy vehicle lane]]s if said lanes are physically separated from the regular travel lanes. The statute also allows {{cvt|60|mph|0}} speed limits on a number of specified non-limited access, multilane, divided highways.<ref name="leg1.state.va.us"/>
The 70-mph provision was added to Section 46.2-870 via an amendment effective on July 1, 2010. The previous version of the statute had authorized a 70-mph speed limit only on [[Interstate 85 in Virginia|I-85]]; the maximum limit permitted elsewhere was 65&nbsp;mph. Notably, the revised statute does not ''require'' a 70-mph speed limit on any road nor make such limit automatic, due to the requirement for traffic and engineering studies. The [[Virginia Department of Transportation]] began studying Interstate highways with 65-mph speed limits during April 2010 to determine which roads should receive the 70-mph limit and announced that the studies would be conducted in three phases over a period of several months, with the initial phase focusing on 323 miles of highway with "no significant levels of crashes and congestion".<ref>Va. Dept. of Transportation, ''Speed Limits'', [http://www.virginiadot.org/info/faq/70_mph_speed_limit.asp] {{Webarchive|url=https://web.archive.org/web/20140201164022/http://www.virginiadot.org/info/faq/70_mph_speed_limit.asp|date=February 1, 2014}} (posted June 7, 2010; accessed June 16, 2010).</ref> As of July 1, 2010, VDOT increased the speed limit to 70&nbsp;mph on a portion of one highway ([[Interstate 295 (Virginia)|I-295]] south of [[Interstate 64 in Virginia|I-64]]).<ref>[http://www2.timesdispatch.com/business/2010/jun/25/vdot25-ar-231096/ Stretch of I-295 will have 70-mph speed limit] {{Webarchive|url=https://web.archive.org/web/20100701221738/http://www2.timesdispatch.com/business/2010/jun/25/vdot25-ar-231096/ |date=July 1, 2010}}. ''Richmond Times-Dispatch'' (June 25, 2010. Retrieved July 1, 2010).</ref> On October 20, 2010, Governor [[Bob McDonnell]] announced that by the end of 2010, VDOT would post 70-mph speed limits on 680 miles of Virginia Interstates located outside of urban areas, representing 61 percent of Virginia's total 1,119 miles of Interstate highways.<ref>[http://www.roanoke.com/news/breaking/wb/264541 Gov. McDonnell: Interstate speed limits can increase to 70 mph]. Roanoke Times (2010-10-20, retrieved October 20, 2010).</ref> While the statute allows for speed limits up to 70&nbsp;mph on urban Interstates, as of March 2015 VDOT has declined to post a limit higher than 65&nbsp;mph on any urban highway other than I-295 in Richmond.
The statute also allows 70-mph speed limits on routes other than Interstates. Initially VDOT declined to consider any such routes for the higher limit, but in early 2012 VDOT posted a 70-mph limit on a portion of US-29 near [[Lynchburg, Virginia|Lynchburg]].<ref>Scott Marshall (February 24, 2012). [http://www2.newsadvance.com/news/2012/feb/24/speed-limit-part-us-29-amherst-county-go-ar-1710243/ Speed limit on part of U.S. 29 in Amherst County to go up] {{Webarchive|url=https://web.archive.org/web/20121020135417/http://www2.newsadvance.com/news/2012/feb/24/speed-limit-part-us-29-amherst-county-go-ar-1710243/ |date=October 20, 2012}}. The News & Advance (Retrieved February 27, 2012).</ref>
Other Virginia statutes prescribe exceptions to the general rules set forth above. The notable aspect of Virginia's current speed limit laws is that the Department of Transportation has no authority to raise speed limits above the statutory limits unless the General Assembly passes a statute permitting the change. Since the [[National Maximum Speed Law]] was repealed in 1995, such statutory exceptions were largely confined to a highway-by-highway basis, as evidenced by the list of 60-mph exceptions in Va. Code § 46.2-870.
Notably, Virginia's reckless driving statute provides that driving 20&nbsp;mph over the speed limit, or in excess of {{cvt|85|mph|0}}<ref name=":2">{{Cite web|url=https://legiscan.com/VA/bill/SB63/2020|title=Virginia SB63 {{!}} 2020 {{!}} Regular Session|website=LegiScan|language=en|access-date=March 27, 2020}}</ref> regardless of the posted speed limit, is grounds for a reckless driving ticket. Thus, in a 70-mph zone traveling 16&nbsp;mph (since July 2020<ref name=":2" />) over the speed limit is prosecutable as a misdemeanor with penalties of up to a $2,500 fine and/or 1-year imprisonment.<ref>[https://law.lis.virginia.gov/vacode/46.2-862/ Virginia code 46.2-862] retrieved January 14, 2011</ref>
Virginia law does not prescribe a fixed minimum speed limit, although a statute does authorize the posting of such limits where traffic and engineering studies indicate that they would be appropriate.<ref>[https://law.lis.virginia.gov/vacode/46.2-877/ Va. Code § 46.2-877, "Minimum speed limits"]. Leg1.state.va.us.</ref>
Virginia is the only state, along with the [[District of Columbia]], that prohibits the use of [[radar detectors]].
==Wake Island==
The speed limit on [[Wake Island]] is {{convert|40|mph|km/h|0|abbr=on}}.<ref>http://www.federalregister.gov/documents/2002/04/09/02-8303/wake-island-code Wake Island Code. Retrieved January 8, 2018.</ref>
==Washington==
The Revised Code of Washington permits speed limits of {{cvt|75|mph|0}} in sections deemed appropriate by an engineering study.<ref>{{Cite web |url = https://app.leg.wa.gov/rcw/default.aspx?cite=46.61.410 |title = RCW 46.61.410: Increases by secretary of transportation—Maximum speed limit for trucks—Auto stages—Signs and notices. |website = app.leg.wa.gov }}</ref> As of February 2016, the typical speed limit on a [[Washington (state)|Washington]] freeway is {{cvt|70|mph|0}} rural, {{cvt|60|mph|0}} urban (the speed limits on these types of freeways only vary in the [[Tri-Cities, Washington|Tri Cities]]), with a truck speed limit no higher than 60&nbsp;mph if over 10,000 pounds gross weight. Limits were raised to current speeds following the elimination of the federal 55&nbsp;mph speed limit, to more closely reflect the common speeds of traffic at that time.<ref>{{Cite web |url = https://archive.seattletimes.com/archive/?date=19960208&slug=2313104 |title = State Releases Plan To Raise Speed Limits &#124; The Seattle Times |website = archive.seattletimes.com }}</ref> There are a wide range of speed limits statewide, due to legislated flexibility for [[WSDOT]] in balancing the desire for transportation speed against safety considerations for any particular stretch of highway.
The default speed limit on a rural 2-lane highway in Washington is {{cvt|60|mph|0}};<ref>{{Cite web |url = https://app.leg.wa.gov/RCW/default.aspx?cite=46.61.400 |title = RCW 46.61.400: Basic rule and maximum limits. |website = app.leg.wa.gov }}</ref> however, the limit on undivided highways varies. In mountainous country like the Cascades and Olympic Mountains, certain twisty roads are limited to {{cvt|55|mph|0}}, whereas some flat, straight highways in eastern Washington have a limit of 65. The speed limit for motorhomes and autos with trailers is 60&nbsp;mph, the same limit as trucks. Roads with traffic lights are limited to 55&nbsp;mph. The school zone speed limit is {{cvt|20|mph|0}} but is in effect during certain hours or if children are present. Divided highways in Washington are rare, however, [[U.S. Route 395]] between Pasco and Ritzville is a high-speed divided highway with a maximum speed limit of {{cvt|70|mph|0}}.
Some areas within Washington State use [[variable speed limit]]s such as on portions of [[Interstate 90 in Washington|I-90]] between Seattle and Issaquah and over [[Snoqualmie Pass]].
==West Virginia==
The speed limit on most rural Interstates is {{cvt|70|mph|0}}. Urban Interstate speed limits generally vary from {{cvt|55|mph|0}} to {{cvt|65|mph|0}}.<ref>
{{cite web |url = http://www.carinsurancepedia.com/states/west-virginia/ |title = West Virginia Automotive Facts |publisher = CarInsurancePedia |access-date = April 23, 2014 }}</ref> Sections of [[Interstate 64 in West Virginia|I-64]] and [[Interstate 68 in West Virginia|I-68]] have lower truck speed limits because of steep grades; otherwise, West Virginia does not post separate truck speed limits. The [[West Virginia Turnpike]] between Chelyan and Mahan, and [[Interstate 77 in West Virginia|I-77]] between Princeton and Bluefield has a 60&nbsp;mph speed limit because of sharp curves.
Speed limits on 4-lane divided highways are normally {{cvt|65|mph|0}}, although some stretches within cities are posted as low as {{cvt|50|mph|0}}. Open country highways have a [[Statute|statutory]] limit of 55&nbsp;mph, which includes most rural two-lane highways and even includes some one lane back country roads or any road without a posted speed limit. Cities and towns set their own speed limits, which are usually between {{cvt|25|mph|0}} and {{cvt|55|mph|0}}. [[School zones]] have a [[Statute|statutory]] speed limit of {{cvt|15|mph|0}}. Speed limits are commonly reduced by 15&nbsp;mph in work zones.
In 2019 the West Virginia Legislature passed a resolution allowing WVDOT to raise speed limits on interstates to 75&nbsp;mph based on safety and traffic studies.<ref>
{{cite web |url=https://www.wsaz.com/content/news/DOT-to-consider-raising-WVa-speed-limit-to-75-mph-507000671.html |title=DOT considers raising WV speed limit to 75 mph |website=wsaz.com |date=March 11, 2019 |access-date=March 11, 2019}}</ref>
==Wisconsin==
The state of [[Wisconsin]]'s speed limits are set out in statutory law but may often be modified by the maintaining government entity.<ref>[http://www.legis.state.wi.us/statutes/Stat0346.pdf Wisconsin Statutes Chapter 346 "Rules of the Road", Subchapter IX, "Speed Restrictions" §57 (346.57)]. (PDF).</ref> In addition to a basic speed rule, Wisconsin law specifies certain occasions where reduced speeds are required including{{emdash}}and not limited to the approaches and traverses of [[level crossing|rail crossings]], winding roads, roads where people are present, and the crests of grades.<ref>[http://www.legis.state.wi.us/statutes/Stat0346.pdf Wisconsin Statutes Chapter 346 "Rules of the Road", Subchapter IX "Speed Restrictions" §57 subsections 2 & 3 (346.57)]. (PDF).</ref> Although there is no numeric minimum speed limit, state law prohibits the impediment of traffic by unreasonably slow speeds.<ref>[http://www.legis.state.wi.us/statutes/Stat0346.pdf Wisconsin Statutes Chapter 346 "Rules of the Road", Subchapter IX "Speed Restrictions" §59 "Minimum speed regulation" (346.59)]. (PDF).</ref> Vehicles that lack rubber [[tire]]s filled with compressed air and/or carry a [[Slow moving vehicle|slow moving vehicle orange safety triangle]] have a hard limit of {{cvt|20|mph|0}}.<ref>[http://www.legis.state.wi.us/statutes/Stat0346.pdf Wisconsin Statutes Chapter 346 "Rules of the Road", Subchapter IX "Speed Restrictions" §58 "Special speed restrictions for certain vehicles" (346.58)]. (PDF).</ref>
The state of Wisconsin has four default speed limits.<ref name="legis.state.wi.us">[http://www.legis.state.wi.us/statutes/Stat0346.pdf Wisconsin Statutes Chapter 346 "Rules of the Road", Subchapter IX "Speed Restrictions" §57 subsection 4 (346.57)]. (PDF).</ref> {{cvt|15|mph|0}} limits apply in [[school zone]]s (on major roads during school arrival and dismissal periods only), near parks with children, and in [[alley]]s. {{cvt|10|mph|0}} default speed limits apply, unless modified by the managing authority, on "service roads" within corporate limits. Within municipal boundaries and in areas of dense urban development a {{cvt|25|mph|0}} limit is in effect unless another speed limit is indicated. In some rural jurisdictions, such as townships, {{cvt|35|mph|0}} limit is the default speed limit for residential areas. The entry to such an area is to be marked by speed limit signs. Outside of built-up areas (these include denser business, industrial or residential land uses according to the relevant law) a {{cvt|55|mph|0}} limit is effective in the absence of other indications.
While all 2 lane roads maintained by WisDOT as of 2015 have a {{cvt|55|mph|0}} maximum, a small portion of [[Minnesota State Highway 23]] that passes through the state south of [[Superior, Wisconsin|Superior]] but is maintained by MNDOT has a {{cvt|60|mph|0}} limit through the state.<ref>{{cite web |title = 2014 Report on the Evaluation of Certain Highway Speed Limits |date = January 2015 |publisher = Minnesota Department of Transportation |url = http://www.dot.state.mn.us/govrel/reports/2015/2015-Evaluation-of-Certain-Speed-Limits-report.pdf }}{{page needed|date=December 2015}}</ref>
Along with the aforementioned default speed limits, there are other statutory speed limits that more often require signs to be effective.<ref name="legis.state.wi.us"/> {{cvt|70|mph|0}} limits on freeways and {{cvt|65|mph|0}} limits on [[Limited-access road|expressways]] require signs to be effective. The default speed limit on these types of roads is {{cvt|55|mph|0}} as they do not directly interact with the built-up environment. In the densest urban districts a statutory {{cvt|25|mph|0}} limit is effective when adequate signage is used, as are {{cvt|35|mph|0}} limits in areas of light development. The same applies to {{cvt|45|mph|0}} limits on highways designated as "rustic" roads. However, "an alleged failure to post [such a speed limit sign] is not a defense to a prosecution" in the case of such statutory limits.<ref>{{cite news |date = November 3, 2015 |author = Rachelle Baillon |title = Drivers take note: 70 m.p.h. speed limit added to several new routes in southeast Wisconsin |publisher = Fox6now.com |url = http://fox6now.com/2015/11/03/wisdot-70-mph-speed-limit-added-to-new-routes-in-southeastern-wisconsin/ }}</ref>
==Wyoming==
[[Wyoming]]'s highest speed limit is {{cvt|80|mph|0}}, found on its Interstate highways, and {{cvt|70|mph|0}} on its four-lane divided highways. The speed limit for school zones is {{cvt|20|mph|0}}, {{cvt|30|mph|0}} in urban districts and residential areas, 70&nbsp;mph for other paved roads, and {{cvt|55|mph|0}} for unpaved roads.<ref>{{Cite web |url = http://legisweb.state.wy.us/statutes/statutes.aspx?file=titles/Title31/T31CH5AR3.htm |archive-url = https://web.archive.org/web/20090115002954/http://legisweb.state.wy.us/statutes/statutes.aspx?file=titles/Title31/T31CH5AR3.htm |url-status = dead |archive-date = January 15, 2009 |title = Article 3 - Speed Regulations }}</ref> On [[Interstate 25 in Wyoming|I-25]] in Cheyenne and [[Casper, Wyoming|Casper]], the speed limit is {{cvt|65|mph|0}} and {{cvt|60|mph|0}} respectively.
In February 2014, the state Assembly passed a bill that would raise the speed limit from {{cvt|75 to 80|mph|0}} on certain freeway segments that would meet safety standards. The bill passed the Senate on February 25 and raised the speed limit on certain freeway sections to 80&nbsp;mph on July 1, 2014.<ref>{{cite news |title = Wyoming House endorses higher highway speed limit |author = Kyle Roerink |agency = Casper Star-Tribune |date = February 25, 2014 |url = http://billingsgazette.com/news/state-and-regional/wyoming/wyoming-house-endorses-higher-highway-speed-limit/article_ccabce8d-7c1e-541e-8d8d-287b0c29ad3a.html |newspaper = Billings Gazette |access-date = February 25, 2014 }}</ref> However, an attempt to raise the speed limit to {{cvt|70|mph|0}} on two-lane highways such as Wyoming 120 and US 14 was turned down that same month, but this same provision became law in February 2015. On February 1, 2016, the speed limit on WY 120 (a two-lane highway) from the Chief Joseph Highway to the Montana border increased to 70&nbsp;mph. Two other two-lane highway sections, WY 130 from Interstate 80 south to Saratoga and US 85 from east of I-25 to Newcastle, increased to 70&nbsp;mph.
==See also==
* [[Driver License Compact]]
* [[Non-Resident Violator Compact]]
* [[Solomon curve]]
* [[Traffic violations reciprocity]]
==Notes==
{{Reflist|group=Note}}
==References==
{{reflist}}
==Law review==
* {{anchor|6_ALR3d_1326}}{{cite book |title = American Law Reports—Annotated |series = 3rd Series |chapter = Indefiniteness of automobile speed regulations as affecting validity |author = R. A. Vinluan |publisher = The Lawyers Co-operative Publishing Company; Bancroft-Whitney; West Group Annotation Company |volume = 6 |page = 1326 |year = 2008 }}
* {{anchor|50_ALR2d_343}}{{cite book |title = American Law Reports—Annotated |series = 2nd Series |chapter = Meaning of "residence district", "business district", "school area", and the like, in statutes and ordinances regulating speed of motor vehicles |author = C. C. Marvel |publisher = The Lawyers Co-operative Publishing Company; Bancroft-Whitney; West Group Annotation Company |volume = 50 |page = 343 |year = 2010 }}
{{Speed limits in the United States}}
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[[Category:Road transportation in the United States]]
[[Category:Speed limits by country|United States]]
[[Category:United States transportation law]]