Table 3-7. Maximum Posted Speed Limits on Rural Interstates: 2007 (Miles Per Hour)
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.
Table in Excel format | Historical data
| 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 | 65 | 65 |
| Louisiana | 70 | 70 |
| Maine | 65 | 65 |
| Maryland | 65 | 65 |
| Massachusetts | 65 | 65 |
| Michigan | (R) 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 | 255 | 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 | 65 | 375 |
| Utah | 75 | 75 |
| Vermont | 65 | 65 |
| Virginia | 465 | 465 |
| Washington | 60 | 70 |
| West Virginia | 70 | 70 |
| Wisconsin | 65 | 65 |
| Wyoming | 75 | 75 |
Key: R = revised.
1Urban Interstate.
2The maximum speed for trucks on the Ohio Turnpike is 65 miles per hour (mph).
3In sections of I-10 and I-20 in rural West Texas, the speed limit for passenger cars and light trucks is 80 miles per hour. For large trucks, the speed limit is 70 miles per hour in the daytime and 65 miles per hour at night.
4Effective 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 http://www.iihs.org/laws/state_laws/speed_limit_laws.html as of May 24, 2007.
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