Table 2-9: Maximum Posted Speed Limits by Type of Road: 2011

Table 2-9: Maximum Posted Speed Limits by Type of Road: 2011

(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, Trucks: 65
Arkansas 70; Trucks: 65 55 602 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 603 603 553 453
Idaho 75; Trucks: 65 75 65 65
Illinois 65 55 65, Trucks: 55 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 road4 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 655 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 756 75 75 75
Utah 757 65 75 65
Vermont 65 55 50 50
Virginia 708 708 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 The maximum speed limit is established by county ordinance or by the director of transportation.

4 The speed limit may be increased to 70 mph on specific segments of highway upon the basis of an engineering and traffic investigation. 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.

5 The speed limit on the Ohio Turnpike is 70 mph.

6 In sections of I-10 and I-20 in rural West Texas, 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 designed to accommodate the higher speed and it has been determined by a traffic and safety engineering study to be reasonable and safe, effective September 1, 2011.

7 Based on 2008 Utah House Bill 406, which became effective on May 5, 2008, portions of I-15 have a posted limit of 80 mph.

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

KEY: n/a = 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 Jul. 20, 2011.