2025 CARB

On-Road Heavy-Duty Diesel Vehicles (In-Use) Regulation and Heavy-Duty Inspection and Maintenance (HD I/M) Regulation

    • Vehicles with a Gross Vehicle Weight Rating (GVWR) over 14,000 lbs

    • NON-Gasoline engines (excluding Zero-Emission vehicles)

    • California (CA) registered vehicles

    • Does not apply to vehicles filed as a Planned Non-Operation with CA DMW

    • Must open an account with the Clean Truck Check web site and fees are due yearly.

    • Vehicle test can be performed 90 days prior to the expiration of vehicle tags.

      • Example: Tags expire in March you can start testing in January.

    • Motorhomes test once (1) a year

    • Private or Federal/State owned vehicles test twice (2) a year until 2027 when the testing will be every quarter (4 times yearly)

    • CA Exempt plated vehicles will have a compliance schedule based on the last digit of the VIN.

      • Agricultural vehicles test once (1) a year

Truck and Bus Regulation TRUCRS

    • Private or Federal owned vehicles with a Gross Vehicle Weight Rating (GVWR) over 14,000 lbs

    • Vehicle must have a 2010 or later engine

    • Must register with TRUCRS

    • Two Exemptions:

      • Low Use Exemption

        • Must have registered the vehicle in TRUCRS prior to 2014.

        • Cannot add vehicles after 2014

        • Max milage per year 1000

        • Must report mileage yearly by January 31th

      • NOx Exempt

        • Must operate in these counties: Alpine, Colusa, Del Norte, Glenn, Humboldt, Lake, Lassen, Mendocino, Modoc, Monterey, Northern Sonoma, Plumas, San Benito, San Luis Obispo, Santa Barbara, Santa Cruz, Shasta, Sierra, Siskiyou, Tehama, Trinity, and Yuba.

    • Vehicles with a Gross Vehicle Weight Rating (GVWR) over 14,000 lbs

    • NON-Gasoline engines (excluding Zero-Emission vehicles)

    • California (CA) registered vehicles

    • Does not apply to vehicles filed as a Planned Non-Operation with CA DMW

    • Must open an account with the Clean Truck Check web site and fees are due yearly.

    • Vehicle test can be performed 90 days prior to the expiration of vehicle tags.

      • Example: Tags expire in March you can start testing in January.

    • Motorhomes test once (1) a year

    • Private or Federal/State owned vehicles test twice (2) a year until 2027 when the testing will be every quarter (4 times yearly)

    • CA Exempt plated vehicles will have a compliance schedule based on the last digit of the VIN.

      • Agricultural vehicles test once (1) a year

Advance Clean Fleet (ACF) regulation

    • CA seaports or intermodal railyards (Drayage vehicles)

    • 8500 lbs GVWR vehicles and over $50 million in gross annual revenues

    • 50 or more vehicles above 8500lbs GVWR, excluding light-duty package delivery vehicles.

    • Federal, State and Local Government with vehicle over 8500lbs GVWR

    • Report vehicles in the TRUCRS web site

Public Agencies & Utilities (PAU) Rules

    • Owns diesel or alternative fueled on-road vehicles over 14,000lbs

    • Must report vehicles in TRUCRS web site, starting January 1, 2021

Solid Waste Collection Vehicle (SWVC) Regulation

    • Was adopted by the CARB in 2004

    • Requires all garbage roll-off and garbage packer trucks to have particulate matter (PM) filters installed by December 31, 2010

    • Reporting of these trucks is now mandatory and the information will be used to minimize the chance for unnecessary registration delays at the California Department of Motor Vehicles (DMV)

    • Must report vehicles in TRUCRS

Transport Refrigeration Unit (TRU) Regulation

    • TRU’s must be registered in the ARBER system

    • Effective October 1, 2022 emission reductions from diesel-powered TRU’s and increase the use of zero emission technology

    • TRU owners or owner/operators are NOT required to pay TRU operating fees currently

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