Table 2-9: Maximum Posted Speed Limits by Type of Road: 2013

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(Speed limit in miles per hour)

State Interstate Other limited-access roads1 Other roads
Rural Urban
Alabama 70 65 65 65
Alaska 65 55 65 55
Arizona 75 65 65 65; trucks: 65
Arkansas 70; trucks: 65 55 601 55
California 70; trucks: 55 65; trucks: 55 70; trucks: 55 65; trucks: 55
Colorado 75 65 65 65
Connecticut 65 55 65 55
Delaware 65 55 65 55
District of Columbia n/a 55 n/a 25
Florida 70 65 70 65
Georgia 70 65 65 65
Hawaii 602 602 552 452
Idaho 75; trucks: 65 75 65 65
Illinois 65 55 65 55
Indiana 70; trucks: 65 55 60 55
Iowa 70 55 70 55
Kansas 75 75 75 65
Kentucky 65; 70 on specified segments of road3 65 65 55
Louisiana 75 70 70 65
Maine 75 65 65 60
Maryland 65 65 65 55
Massachusetts 65 65 65 55
Michigan 70 (trucks 60); <70 (trucks 55) 65 70 55
Minnesota 70 65 65 55
Mississippi 70 70 70 65
Missouri 70 60 70 65
Montana 75; trucks: 65 65 day: 70; night: 65 day: 70; night: 65
Nebraska 75 65 65 60
Nevada 75 65 70 70
New Hampshire 65 65 55 55
New Jersey 65 55 65 55
New Mexico 75 75 65 55
New York 65 65 65 55
North Carolina 70 70 70 55
North Dakota 75 75 70 65
Ohio 65; 70 on Ohio Turnpike 65 55 55
Oklahoma 75 70 70 70
Oregon 65; trucks: 55 55 55 55
Pennsylvania 65 55 65 55
Rhode Island 65 55 55 55
South Carolina 70 70 60 55
South Dakota 75 75 70 70
Tennessee 70 70 70 65
Texas 75; 80 or 85 on specified segment of road4 75 75 75
Utah 75; specified segments of road may have posted limits that exceed 755 65 75 65
Vermont 65 55 50 50
Virginia 706 706 65 55
Washington 70; trucks: 60 60 60 60
West Virginia 70 55 65 55
Wisconsin 65 65 65 55
Wyoming 75 60 65 65

1Based on traffic and engineering studies, the speed limit may be raised on particular two-lane or four-lane highways to 65mph.

2In Hawaii, the maximum speed limit is established by county ordinance or by the director of transportation.

3In Kentucky, the speed limit may be increased to 70 mph on specific segments of highway upon the basis of an engineering and traffic investigation.

4In sections of I-10 and I-20 in West Texas and sections of Highway 45 in Travis County, the speed limit for passenger cars and light trucks is 80 mph. Speed limits may be established not to exceed 85 mph 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) is operating with a posted limit of 85 mph, effective October 2012.

52013 UT HB 83 expands the portion of roads that may be posted at speed limits that exceed 75 mph to include a portion of Interstate 15 that is between milepost 244 and milepost 24 or between milepost 366 and the Utah-Idaho state line; a portion of Interstate 80 that is between milepost 99 and the Utah-Nevada state line; or a portion of Interstate 84 that is between the Tremonton Interchange and the Utah-Idaho state line. The new limits, reportedly 80 mph, will become effective upon signage.

6In Virginia, the posted limit may be as high as 70 mph where indicated by lawfully placed signs, erected subsequent to a traffic engineering study, effective July 2010.

NOTES: Interstates are divided into urban and rural sections based primarily on population size and population density. Many roads, particularly urban interstates, often have a lower posted speed limit than the maximum allowable shown in this table.

SOURCE: Insurance Institute for Highway Safety, Highway Loss Data Institute, Maximum posted speed limits, available at www.iihs.org/laws/SpeedLimits.aspx as of April 2013.