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
ACF Update
The California Air Resources Board (CARB) will conduct a public hearing to consider proposed amendments to the Advanced Clean Fleets (ACF) regulation. For more information please visit the 2025 Rulemaking Page.
Funding, technical assistance, events, and more
