The Periodic Smoke Inspection Program (PSIP) requires California-based truck and bus fleets with two or more heavy duty diesel vehicles (GVWR over 6,000lbs) to conduct annual smoke opacity tests. Additionally, all testing records must be maintained for a period of two years.

To keep your fleet in compliance and avoid legal action and pay costly penalties, you must adhere to section 2194, title 13, California Code of Regulations (CCR). Click HERE to read the regulation in it’s entirety.

Violations with ARB diesel programs may result in the following penalties and sanctions:

  • Civil penalties ranging from $300 to $10,000 per vehicle per day.
  • Collection procedures with additional late fees and fines.
  • Liens on real estate or personal property such as vehicles and other assets.
  • ARB may obtain a judgment in superior court and can place liens on assets.
  • A Department of Motor Vehicles (DMV) Vehicle License Title Stop (VLT). A DMV VLT Stop will prevent registration, renewal, or transfer of your vehicle(s).
  • At the request of ARB, the California Highway Patrol may remove the vehicle in violation from service.
  • ARB may file with the State Controller a request to offset any amount due a state agency from a person or entity, against any amount owing that person or entity by any state agency. Generally, ARB may file a tax offset request with the Franchise Tax Board for any amount owed due to unpaid violations.


Helpful Links

C.A.R.B – California Air Resources Board
The Truckstop – Official California State Diesel Truck Information