Which Trucks Need CARB Compliance in California?
Most commercial heavy-duty diesel trucks on California highways fall under one or more CARB programs. That includes many out-of-state plates: California enforcement does not stop at the border for compliance expectations.
Common triggers: engine model year and mileage thresholds, transport refrigeration units (TRUs), lack of current compliance verification, or operating without required labels and documentation in the cab.
Exemptions exist for certain government, emergency, and specialized equipment—but misuse of an exemption is expensive. If you are unsure, run your VIN and operation type past our team before you book the load.
We help you obtain the correct 5-day pass or full permit package so your paperwork matches how you actually run.