Truck Speed Limits by State 2026
Speed limits for commercial motor vehicles vary significantly across the United States. Some states allow trucks at 80 mph while California caps them at 55. This guide provides the complete state-by-state reference for CMV speed limits, split speed limits, and hammer lane restrictions in 2026.
O Trucking Editorial Team
Trucking Industry Experts
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5+ years planning routes across 48 states with speed limit compliance
This article was written by the O Trucking editorial team with 9+ years of combined trucking industry experience. Learn more about us.
O TruckingTruck Speed Limits by State 2026: Complete CMV Guide
Sample Truck Speed Limits by State
This table shows maximum truck interstate speed limits for selected states. Always verify current posted limits as they change:
| State | Truck Interstate | Car Interstate | Split? |
|---|---|---|---|
| California | 55 mph | 65-70 | Yes |
| Oregon | 55-65 mph | 55-65 | Some roads |
| Indiana | 65 mph | 70 | Yes |
| Ohio | 65 mph | 70 | Yes |
| Texas | 70-80 mph | 75-85 | Some roads |
| Utah | 75-80 mph | 75-80 | No |
| Wyoming | 75 mph | 80 | Yes |
| Illinois | 65 mph | 70 | Yes |
| Georgia | 70 mph | 70 | No |
| Florida | 70 mph | 70 | No |
California's 55 MPH Truck Limit Is Strictly Enforced
Know the Limits Before You Cross the State Line
Truck Speed Limits FAQ
Common questions about truck speed limits by state
What states have split speed limits for trucks?
Several states have split speed limits where trucks have a lower speed limit than passenger vehicles. Notable split-speed states include California (55 mph trucks vs 65-70 cars), Oregon (55 trucks vs 65 cars on some roads), Washington (60 trucks vs 70 cars on some highways), and Indiana (65 trucks vs 70 cars). Always check state-specific limits as they change.
What is the fastest truck speed limit in the US?
Texas and a few other western states have the highest truck speed limits, with some Texas highways allowing trucks up to 80 mph (though most interstates in Texas are 70-75 for trucks). Utah, Wyoming, and Montana also have relatively high truck limits of 75-80 mph on rural interstates.
What is the slowest truck speed limit in the US?
California has the lowest general truck speed limit at 55 mph on most highways, regardless of the posted speed for passenger vehicles. This 55 mph truck limit is strictly enforced and applies on freeways where cars may be traveling at 65-70 mph.
Can trucks use the left lane in all states?
No. Many states restrict or prohibit trucks from using the left lane (hammer lane) on highways with three or more lanes. Some states ban trucks from the left lane entirely; others restrict left-lane use to passing only. Violations can result in fines. Check each state's truck lane restrictions before assuming you can use the left lane.
Route Planning That Respects Speed Limits
Our dispatchers plan realistic schedules based on actual truck speed limits — not car limits. Safe, legal, and on time.