New California requirements for heavy-duty vehicles and TRUs

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September 25, 2023

New California requirements for heavy-duty vehicles and TRUs


The California Air Resources Board (CARB) recently mailed a post card to California-registered heavy-duty vehicle owners to share important information about upcoming California requirements. CARB is focused on cleaning up heavy-duty vehicle pollution to reduce smog-forming oxides of nitrogen (NOx) and toxic diesel particulate matter (PM) emissions and the resulting health risks. To meet California's health-based air quality standards and greenhouse gas emissions reduction goals, trucks and buses operated in the state must be as clean as possible. California is working to meet the Governor’s goal of 100% zero-emission transportation, where feasible, by 2035 for off-road transport refrigeration units (TRUs) and drayage vehicles and 2045 for all other heavy-duty vehicles. As a result of these efforts, the regulations listed below may affect your heavy-duty vehicle(s) or TRUs.


ACF CTC TRU Postcard Image

What regulations may affect your fleet?

  • Clean Truck Check (Heavy-Duty Inspection and Maintenance Program) – Affects non-gasoline vehicles with a GVWR greater than 14,000 pounds operating in California. Requires reporting, inspection, and compliance fees.
  • Advanced Clean Fleets – Affects government fleets, drayage trucks, and fleets that own or dispatch over 50 vehicles or $50 million in annual revenue. These vehicles, over 8,500 pounds GVWR, must transition to zero-emission vehicles.
  • Transport Refrigeration Unit (TRU) Airborne Toxic Control Measure – Affects diesel-powered TRUs and facilities. Zero-emission, emission standard, refrigerant, reporting, labeling, facility registration, and fee requirements.

Some requirements are already in effect. Stay ahead of potential enforcement action and DMV registration holds.

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