If your trucks operate in California, December 31 deadline applies
California’s new emissions program for heavy-duty trucks – known as Clean Truck Check – is in full swing, and it’s not just for California-based carriers.
Owners of vehicles subject to the program must report their vehicles to the California Air Resources Board (CARB) and pay the annual compliance fee by December 31, 2023.
Not just for California-based vehicles
Clean Truck Check is designed to ensure trucks operate at maximum efficiency for the life of the vehicle and to help California meet its air quality standards. The program applies to diesel and alternative fuel trucks and buses with a gross vehicle weight rating (GVWR) over 14,000 pounds, including:
- Out-of-state and out-of-country vehicles,
- California motorhomes, and
- Agricultural vehicles.
Entities with covered vehicles must:
- Report their vehicles to CARB and pay a compliance fee of $30 per year per vehicle,
- Regularly test to ensure all emissions-related equipment is functioning properly, and
- Report the testing data to CARB.
Roadside monitoring devices already in use
Since January 2023, Roadside Emissions Monitoring Devices (REMD) are being used throughout California to screen for potential high emitting vehicles. Owners of vehicles identified as potential high emitters are being issued a Notice to Submit to Testing (NST) letter and have 30 days to submit a passing emissions test to CARB. Failure to submit a passing test may result in:
- An enforcement violation,
- Loss of compliance certification, and
- California vehicle registration hold.
Routine testing required
The test can be conducted anywhere using the truck’s on-board diagnostic (OBD) system provided it’s performed by a CARB-credentialed tester using a CARB-certified readout device. When submitting testing and reporting data using telematic devices that have received CARB certification, a CARB-credentialed tester is not required.
Older heavy-duty vehicles without OBD systems will use the current opacity testing requirements with an added visual testing component.
OBD-equipped vehicles must test two times per year, increasing to four times per year after three years.
Non-OBD equipped vehicles must test two times per year.
Agricultural vehicles and California registered motorhomes must test once per year.
If you got the letter
If you received a NST letter, you have 30 days to submit a passing emissions test to CARB. To help get your vehicle tested, check the list of “Available for Hire Credentialed Testers” on the CARB website. The list includes commercial CARB-credentialed Clean Truck Check (HD I/M) Testers with contact information.
Alternatively, the Clean Truck Check program allows a vehicle owner or a fleet mechanic to conduct the required testing and reporting. A tester needs to take the Clean Truck Check (HD I/M) training, pass the exam, and use the correct test equipment. The “Tester Training Course and Exam” are also available on the CARB website.
Key to remember: The Clean Truck Check program applies to all trucks and buses with a gross vehicle weight rating over 14,000 pounds operating in California, including out-of-state and out-of-country vehicles. The December 31 deadline to register is quickly approaching.