Background of the Clean Truck Program

In December 2021, the California Air Resources Board (CARB) approved the Heavy-Duty Vehicle Inspection and Maintenance (HD I/M) Regulation, now known as Clean Truck Check, in an ongoing effort to meet air quality standards by ensuring heavy-duty vehicle emissions control systems operate properly throughout the life of the vehicle and necessary repairs are made in a timely manner. Clean Truck Check requires reporting, payment of annual compliance fees, and vehicle emissions testing.

Clean Truck Check Requirements

Clean Truck Check applies to almost all diesel, alternative fuel, and hybrid vehicles, with a GVWR over 14,000 pounds operating on public roads and highways in California even if they are not registered in California. This includes government vehicles; motorcoaches; transit, shuttle and school buses; hybrid vehicles; commercial and personal use vehicles; California registered motorhomes; and single vehicle fleets. DMV registration holds will apply to vehicles that do not meet Clean Truck Check requirements.

For more information on which vehicles are affected by or exempt from Clean Truck Check, visit…   MORE INFO