Office of Operations Freight Management and Operations

Freight Facts and Figures 2011

Table 3-11. Maximum Posted Speed Limits on Rural Interstates: 2011

Delay, reliability, and similar performance measures are typically based on the difference between speed limits and actual speeds. Speed limits for trucks vary from state to state and differ from limits set for passenger vehicles in nine states.

Table in Excel format

Miles per hour

State Truck Car
Alabama 70 70
Alaska 65 65
Arizona 75 75
Arkansas 65 70
California 55 70
Colorado 75 75
Connecticut 65 65
Delaware 65 65
District of Columbia1 55 55
Florida 70 70
Georgia 70 70
Hawaii 60 60
Idaho 65 75
Illinois 65 65
Indiana 65 70
Iowa 70 70
Kansas 70 70
Kentucky 265 265
Louisiana 70 70
Maine 65 65
Maryland 65 65
Massachusetts 65 65
Michigan 60 70
Minnesota 70 70
Mississippi 70 70
Missouri 70 70
Montana 65 75
Nebraska 75 75
Nevada 75 75
New Hampshire 65 65
New Jersey 65 65
New Mexico 75 75
New York 65 65
North Carolina 70 70
North Dakota 75 75
Ohio 65 65
Oklahoma 75 75
Oregon 55 65
Pennsylvania 65 65
Rhode Island 65 65
South Carolina 70 70
South Dakota 75 75
Tennessee 70 70
Texas 370 375
Utah 475 475
Vermont 65 65
Virginia 570 570
Washington 60 70
West Virginia 70 70
Wisconsin 65 65
Wyoming 75 75

1Urban Interstate.

2Effective July 10, 2007, the posted speed limit is 70 miles per hour (mph) in designated areas on I-75 and I-71.

3In sections of I-10 and I-20 in rural West Texas, the speed limit for passenger cars and light trucks is 80 mph. For large trucks, the speed limit is 70 mph in the daytime and 65 mph at night. For cars, it is also 65 mph at night.

4Portions of I-15 have a posted limit of 80 mph.

5Effective July 1, 2010, the posted limit may be as high as 70 mph where indicated by lawfully placed signs, erected subsequent to a traffic engineering study.

Source:

Insurance Institute for Highway Safety, Maximum Posted Speed Limits for Passenger Vehicles, available at www.iihs.org/laws/speedlimits.aspx as of August 19, 2011.

 


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