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Speed Limits in the United States by Jurisdiction

StateRural interstates (mph)Urban interstates (mph)Other limited access roads (mph)Other roads (mph)
Alabama70656565
Alaska65556555
Arizona75656565trucks: 65
Arkansas75trucks: 706575trucks: 7065
California70;trucks: 5565trucks: 5570trucks: 5565trucks: 55
Colorado75656565
Connecticut65556555
Delaware65556555
District of Columbian/a55n/a25
Florida70657065
Georgia70706565
Hawaii60605545
Idaho75; 80 on specified segments of road 
trucks: 70
75; 80 on specified segments of road 
trucks: 65
7070
Illinois70556555
Indiana70;trucks: 65556055
Iowa70557065
Kansas75757565
Kentucky65; 70 on specified segments of road656555
Louisiana75707065
Maine75757560
Maryland70707055
Massachusetts65656555
Michigan70 (65 trucks); 75 (65 trucks) on specified segments of road707055
Minnesota70656560
Mississippi70707065
Missouri70607065
Montana80trucks: 7065day: 70; night: 65day: 70; night: 65
Nebraska75707065
Nevada80657070
New Hampshire65; 70 on specified segments of road655555
New Jersey65556555
New Mexico75756555
New York65656555
North Carolina70707055
North Dakota75757065
Ohio70657055
Oklahoma75; 80 on specified segments of road707070
Oregon65; 70 on specified segments of roadtrucks: 55; 65 on specified segments of road556565
Pennsylvania70707055
Rhode Island65555555
South Carolina70706055
South Dakota80807070
Tennessee70707065
Texas75; 80 or 85 on specified segments of road757575
Utah75; 80 on specified segments of road657565
Vermont65555050
Virginia70706555
Washington70; 75 on specified segments of road.
trucks: 60
606060
West Virginia70556555
Wisconsin70707055
Wyoming75; 80 on specified segments of road75; 80 on specified segments of road7070
  • In Hawaii, the maximum speed limit is established by county ordinance or by the director of transportation. 
  • In Idaho, the speed limit may be increased to 80 mph on specific segments of highway on the basis of an engineering and traffic investigation. 
  • The Illinois law allows Cook, DuPage, Kane, Lake, Madison, McHenry, St. Clair and Will Counties to opt-out by adopting an ordinance that sets a lower maximum speed limit, empowering counties to make adjustments based on their own local needs. These counties have a maximum large truck speed limit of 60 mph outside of urban districts and 55 mph inside urban districts. 
  • In Kentucky, the speed limit may be increased to 70 mph on specific segments of highway on the basis of an engineering and traffic investigation. 
  • 2013 New Hampshire House Bill 146 raised the speed limit from 65 to 70 mph on the portion of I-93 from mile marker 45 to the Vermont border. 
  • In Oklahoma, a speed limit of 80 mph may be posted on portions of the turnpike if approved by the Oklahoma Turnpike Authority, effective November 1, 2019. The State Highway Commission may determine that a maximum limit upon any part of the state highway system is greater or less than reasonable upon the basis of an engineering and traffic investigation. 
  • The Transportation Commission may establish a maximum speed limit of less than 80 upon any highway or portion of highway under the jurisdiction of the Department of Transportation, and any portion of highway under the jurisdiction of a state or federal agency. 
  • Sections of I-10 and I-20 in West Texas and sections of Highway 45 in Travis County have a speed limit for passenger cars and light trucks of 80 mph. Speed limits of up to 85 mph may be established if the highway is originally constructed and designed to accommodate the higher speed and it has been determined by an engineering study to be reasonable and safe. State Highway 130 (portions toll) has a posted limit of 85 mph. 
  • In Utah, the speed limit may be increased beyond 75 mph on any freeway or limited access highway on the basis of an engineering and traffic investigation. The highest posted limit in Utah is currently 80mph. 
  • In Washington State, maximum speed limits on highways or portions of highways may be posted as high as 75 mph if based on a traffic and engineering study, effective August 2015. 
  • In Wyoming, the speed limit may be increased to 80 mph on specific segments of highway on the basis of an engineering and traffic investigation. 
Team Autobizzhttp://autobizz.in
Co-Founder Autobizz.in | Automotive Engineer | Fresh out of college, immensely passionate about automobiles along with a flair for writing. Looking forward to being a part of this industry and joining it's glorious journey

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