The California Air Resources Board’s Advanced Clean Trucks regulation requires certain entities to report information regarding their California facility locations, and how they and their contractors move freight and perform other services. Additionally the regulation requires large fleet owners to report certain information regarding heavy-duty vehicles (vehicles with a gross vehicle weight rating over 8500 lbs) to CARB by April 1, 2021.

CARB submitted the Advanced Clean Trucks regulation to the Office of Administrative Law (OAL) for review and approval on January 29, 2021, and OAL approved the regulation on March 15, 2021. In light of the relatively short time period between OAL’s approval of the regulation and the April 1, 2021 deadline to report the above mentioned information, CARB is providing affected entities the compliance flexibility to report applicable information through the CARB Large Entity Reporting portal by May 1, 2021.

Who Must Report

Large entities (fleet owners, businesses, government agencies, municipalities, brokers, etc.) will report information about their vehicles over 8,500 lbs. GVWR (hereafter referred to as “vehicle”); if in 2019 they operated a facility in California and meet any of the following criteria:

  • Had gross annual revenues greater than $50 million in the U.S. for the 2019 tax year, including revenues from all subsidiaries, subdivisions, or branches, and had one or more vehicles under common ownership or control that were operated in California in 2019; or
  • Any fleet owner in the 2019 calendar year that had 50 or more vehicles under common ownership or control; or
  • Any broker or entity that dispatched 50 or more vehicles into or throughout California, in the 2019 calendar year; or
  • Any California government agency including all state and local municipalities that had one or more vehicles that were operated in California in 2019; or
  • Any federal government agency that had one or more vehicles that were operated in California in 2019.
  • Reporting is not required for K-12 school bus fleets, transit vehicles, military tactical vehicles, vehicles awaiting sale, nor emergency vehicles as defined in section 2012(c) of the regulation.
What Information Needs to be Reported

Affected entities will need to report general entity information, home-base locations, and information about their vehicles (including off-road yard trucks) and how the vehicles are operated. Vehicle operation includes information about vehicle body types, daily miles traveled, where they are fueled, and other usage characteristics.

You can access training videos, reporting instructions, a reporting guidance document, and the reporting form here.


CARB is developing a medium and heavy-duty zero-emission fleet regulation with the goal of achieving a zero-emission truck and bus California fleet by 2045 everywhere feasible and significantly earlier for certain market segments such as last mile delivery and drayage applications. The intent is to take a recommendation to the Board at the end of 2021. For more information on meetings and workshops click here.

Achieving California’s long-term air quality, climate, and public health goals will require a transition from the conventional combustion technologies to zero-emission everywhere feasible. Promoting the development and use of zero-emission trucks will contribute to the goals set in the Sustainable Freight Action Plan and will help achieve emission reductions as outlined in the State Implementation Plan, Senate Bill (SB) 350 (de León, Chapter 547, Statutes of 2015), Assembly Bill 32 (Nuñez, Chapter 488, Statutes of 2006), and SB 32 (Pavley, Chapter 249, Statutes of 2016) and is consistent with Executive Order N-79-20 signed by Governor Gavin Newsom on September 23, 2020. This effort is part of a broader strategy to increase clean, affordable transportation options such as zero-emission technologies, innovate goods movement, and improve the efficiency of transportation systems in California.


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