This page gives a brief description of the fleet reporting systems available through the California Air Resources Board (ARB). The need to report depends on the regulatory requirement. If you know which regulation you need to report for, please scroll down and select the desired link.
For more information on the regulation, visit the regulatory program page linked from the Regulation Index. The regulatory program website typically contains advisories, factsheets, frequently asked questions, compliance tools and program specific contact information.
Program Reporting and Registration Websites
- Trucks and Buses:
- Tractors and Box-Type Trailers (GHG):
- Port and Railyard Trucks:
Tractors that enter California ports or intermodal railyards must be registered in the statewide Drayage Truck Registry (DTR) prior to port or rail yard entry.
- Transport Refrigeration Units (TRUs or Reefers):
All California based TRUs and TRU generator sets subject to the TRU Regulation must be registered in the Air Resources Board Equipment Registration (ARBER) Database.
The Truck and Bus (TRUCRS) Reporting System is available for reporting diesel trucks and buses with a GVWR more than 14,000 lbs. that are owned by private or federal government fleets that can report to delay compliance. Specific dates and deadlines apply.
Fleets of 53-foot or longer box-type trailers and the tractors that pull them must report in order to take advantage of the Tractor-Trailer Greenhouse Gas (GHG) Regulation flexibility using the Tractor-Trailer Greenhouse Gas (TRUCRS) Reporting System Database. See the How to Register and Report Small Fleets Video if you need help understanding the system.
Other types of equipment may also have reporting requirements.
- Off-Road
Diesel Vehicles:
Off-road diesel equipment that is self propelled is required to report using the Diesel Off-Road On-Line Reporting System (DOORS).
- Stationary
and Portable Equipment:
Owners or operators of portable engines and certain other types of equipment can register their units under the Air Resources Board's (ARB) Statewide Portable Equipment Registration Program (PERP) in order to operate their equipment throughout California without having to obtain individual permits from local air districts.