California Truck Speed Limit
California caps trucks at 55 mph on every highway in the state (CVC 22406). It is the strictest and most consistent truck limit in the country. The trigger is three or more axles or towing a trailer, not gross weight, so even a pickup pulling a trailer drops to 55. Cars run 65 to 70, so the gap is 10 to 15 mph everywhere.
How fast a truck can run in California
California caps trucks at 55 mph on every highway in the state (CVC 22406). It is the strictest and most consistent truck limit in the country. The trigger is three or more axles or towing a trailer, not gross weight, so even a pickup pulling a trailer drops to 55. Cars run 65 to 70, so the gap is 10 to 15 mph everywhere.
Truck-specific rules and quirks
- Trucks held to 55 must use the designated right-hand lane where posted; on a highway with four or more lanes one way they are held to the right two lanes (CVC 21655).
- The trigger is axles or towing, not weight. Any motortruck or truck tractor with three or more axles, and anything towing a trailer, is capped at 55 statewide (CVC 22406). A solo two-axle truck follows the posted limit.
What a speeding ticket costs
The 55 truck cap is its own infraction (CVC 22406), roughly $285 to $500 with penalty assessments plus a point on a CDL. Ordinary speeding is graduated and county-dependent, and the base fine roughly triples once assessments are added. Fines double in a work zone with workers present (CVC 42010).
California Truck Speed Limit FAQ
What is the truck speed limit in California?
Do trucks have a lower speed limit than cars in California?
What is the speeding penalty for a truck in California?
Reference information for planning, not legal advice. Traffic laws change and this can be out of date, so always confirm the current statute and obey posted signs before you rely on it. Last reviewed July 2026. Source: https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?sectionNum=22406.&lawCode=VEH. See our Terms & Disclaimer.
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