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Who We Are?

We’re here to simplify the complexities of CARB Clean Truck checks and ensure your trucks stay compliant. As a certified HD/IM Clean Truck Check service, we specialize in assisting fleets of all sizes—small, medium, or large. Our goal is to remove the hassle from the compliance process by bringing our services directly to you.
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Faq's

The Clean Truck Check program, initiated by the California Air Resources Board (CARB), requires periodic emissions testing for heavy-duty vehicles over 14,000 pounds to ensure their emissions control systems are functioning properly. This program aims to reduce air pollution from these vehicles operating on California roads.
The program applies to most heavy-duty diesel and alternative fuel vehicles over 14,000 pounds, regardless of whether they are registered in California or out of state. Exemptions exist for certain categories, such as zero-emission vehicles and some new vehicles with low NOx emissions.
The first major deadline is July 1, 2024, when vehicle owners must register their vehicles in the Clean Truck Check database. Emissions compliance testing starts on October 1, 2024 (Note: As of August 2024, the California Department of Motor Vehicles has started placing registration holds on vehicles that have not passed a Clean Truck Check inspection). In the first year, vehicles require one test. By the third year, vehicles are required to undergo four tests annually, ensuring continuous monitoring of emissions compliance.
Compliance is enforced through annual reporting and testing requirements. Vehicles must be tested by a CARB-credentialed tester, and any vehicle that fails to meet the standards must be repaired to pass subsequent tests. Failure to comply can result in fines and restrictions on vehicle operation in California.
Non-compliance can result in fines, vehicle registration holds, and potential restrictions on operating the vehicle within California. Vehicles that do not pass emissions tests are also subject to repair and retesting requirements.

Starting January 1st, 2025-26, all semi-trucks will require testing twice a year. Buses, motorhomes for recreational use or emergency occupancy, and agricultural vehicles will need testing once per year. Almost all other vehicles will remain subject to semi-annual testing.

Beginning October 2027, vehicles equipped with on-board diagnostics (OBD) will be required to undergo testing four times per year to comply with updated regulations.

CARB provides resources such as guidelines, lists of certified testers, and technical assistance to help vehicle owners understand and comply with the program requirements. For more details, visit the CARB Clean Truck Check page at https://ww2.arb.ca.gov/overview-fact-sheet-clean-truck-check.

A “Clean Truck Check” is required for nearly all diesel and alternative fuel heavy-duty vehicles with a gross vehicle weight rating (GVWR) exceeding 14,000 pounds that operate on California public roads, including trucks, buses, motorhomes, and agricultural vehicles, even if they are not registered in California; essentially, any large non-gasoline vehicle operating in the state needs to comply with the Clean Truck Check program.

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