Advanced Clean Fleets
The Advanced Clean Fleets (ACF) Regulation is the latest development in CARB’s decades‑long history of reducing emissions from mobile sources that are needed to protect the public health and welfare of Californians. The ACF Regulation requires State and Local Government Agency fleets to reduce emissions by increasing the use of Zero-Emission Vehicles (ZEVs) as vehicles are normally replaced.
More about this program
Advanced Clean Fleets 2025 Amendments Update
The California Air Resources Board (CARB) is providing this guidance to inform State and local government agencies that during the first reporting cycles of the amended Advanced Clean Fleets (ACF) regulations, CARB will focus on supporting compliance on a case-by-case basis as agencies are making good faith efforts to comply.
Funding, technical assistance, events, and more
