Fact #929: June 13, 2016 Heavy Truck Speed Limits Are Inconsistent

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Ranging from a speed limit of 55 miles per hour (mph) to 85 mph, the maximum speed limit for trucks varies from state-to-state. Currently, California has the most conservative maximum speed limit for trucks–55 mph. At the other end of the spectrum, Texas has some roads where the truck speed limit is 85 mph. Because of the varying limits, there is not one common highway speed at which trucks travel. This precludes truck manufacturers from engineering truck engines that peak in efficiency after reaching the speed at which the vehicles most commonly travel. Instead, manufacturers design the vehicle to perform well over the entire range of speeds, which in turn limits engine efficiency.

Maximum Daytime Truck Speed Limits by State, 2016

Map of the U.S. showing maximum daytime truck speed limits by state in 2016

Fact #929 Dataset

Supporting Information

Maximum Daytime Truck Speed Limits by State, 2016
StateSpeed Limit
(miles per hour)
Alabama70
Alaska65
Arizona75
Arkansas70
California55
Colorado75
Connecticut65
Delaware65
District of ColumbiaN/A
Florida70
Georgia70
Hawaii60
Idaho70
Illinois70
Indiana65
Iowa70
Kansas75
Kentucky70
Louisiana75
Maine75
Maryland70
Massachusetts65
Michigan60
Minnesota70
Mississippi70
Missouri70
Montana65
Nebraska75
Nevada80
New Hampshire65
New Jersey65
New Mexico75
New York65
North Carolina70
North Dakota75
Ohio70
Oklahoma75
Oregon65
Pennsylvania70
Rhode Island65
South Carolina70
South Dakota80
Tennessee70
Texas85
Utah80
Vermont65
Virginia70
Washington60
West Virginia70
Wisconsin65
Wyoming80

Source:
Oak Ridge National Laboratory, 2015 Vehicle Technologies Market Report, ORNL/TM-2016/124, April 2016, Figure 150.

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