Freight Facts and Figures 2008
Table 3-8. Maximum Posted Speed Limits on Rural Interstates: 2008
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 often differ from limits set for passenger vehicles.
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 | 55 | 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 | 355 | 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 | 465 | 475 |
| Utah | 575 | 575 |
| Vermont | 65 | 65 |
| Virginia | 665 | 665 |
| 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.
3The maximum speed for trucks on the Ohio Turnpike is 65 mph.
4In 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.
5Effective May 5, 2008, the portion of I-15 between milepost 222 and milepost 64 may be posted with a speed limit of more than 75 mph if warranted by a safety study and a consideration of roadway geometry and population density.
6Effective July 1, 2006, the posted speed limit on I-85 may be as high as 70 mph.
Source:
Insurance Institute for Highway Safety, Maximum Posted Speed Limits for Passenger Vehicles as of May 2007, available at www.iihs.org/laws/state_laws/speed_limit_laws.html as of June 3, 2008.
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