Table 2-9: Maximum Posted Speed Limits by Type of Road: 2008

Table 2-9: Maximum Posted Speed Limits by Type of Road: 2008

(Speed limit in miles per hour)

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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
Arkansas 70; Trucks: 65 55 602 55
California 70; Trucks: 55 65, Trucks: 55 70 65
Colorado 75 65 65 65
Connecticut 65 55 65 55
Delaware 65 55 65 55
District of Columbia NA 55 NA 25
Florida 70 65 70 65
Georgia 70 65 65 65
Hawaii 60 50 45 45
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 70 70 70 65
Kentucky 65; 70 on specified segments of road3 65 65 55
Louisiana 70 70 70 65
Maine 65 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 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 Cars:4 75 Day; 65 Night Trucks: 70 Day; 65 Night Day: 70, Night: 65 Day: 75, Night: 65 Day: 60, Night: 55
Utah 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

1 Limited-access roads are multilaned roads with restricted access using exit and entrance ramps rather than intersections.

2 Upon completion of a study, due to be completed on or before 09/15/08, the speed limit on any 2-lane highway or 4-lane highway shall be increased to 65 miles per hour if the findings of the study support the increase on a particular 2-lane highway or 4-lane highway.

3 On 07/10/07, highway officials increased the speed from 65 mph to 70 mph on Interstate 75 south of US 42, Interstate 71 west to the split to Louisville, and portions of Boone Carroll, Gallatin, and Grant Counties.

4 Sections of interstates 10 and 20 in Texas have speed limits of 80 mph for passenger cars and light trucks, 70 mph for large trucks in daytime, and 65 mph for large trucks at night.

5 Effective May 5, 2008 portions of I-15 have a posted limit of 80 mph.

6 Effective 07/01/10, the posted limit may be as high as 70 mph where indicated by lawfully placed signs, erected subsequent to a traffic engineering study.

KEY: NA = not applicable.

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 for Passenger Vehicles, available at http://www.iihs.org/laws/SpeedLimits.aspx as of Apr. 13, 2010.