Updated: Mar 5

California Air Resources Board (CARB) has withdrawn its request for an Environmental Protection Agency (EPA) waiver for the Advanced Clean Fleets (ACF) regulation. This is positive news for large private fleets (operating 50 or more vehicles) as it removes the mandate forcing them to transition to zero-emission vehicles (ZEVs) in exchange for certain benefits.
However, this withdrawal may negatively impact smaller fleets. Senate Bill 350 remains in effect, requiring California to achieve zero-emission vehicle sales by 2045. CARB is still responsible for creating regulations to meet this ambitious goal.
Without ACF, what does this mean?
Public agencies: The withdrawal has no impact on public agencies as the state retains the authority to enforce environmental regulations within its own jurisdiction.
Large private fleets: They are no longer subject to the mandatory ZEV transition under the ACF program.
It is anticipated that CARB will implement alternative strategies to achieve its zero-emission goals.
These may include:
Leveraging existing programs: Utilizing the Clean Truck Check (CTC) program and restricting vehicle registrations based on age (e.g., denying registration for vehicles older than 13 years) to gradually phase out older, more polluting vehicles.
Targeting specific vehicle model years: Potentially banning the registration of vehicles with 2010-2013 model year engines starting in 2027.
While end-users still have the option to purchase either internal combustion engine (ICE) or ZEV vehicles, dealerships are likely to prioritize ZEV sales due to the ongoing implementation of the Advanced Clean Trucks (ACT) regulation.
Key takeaway: The withdrawal of the ACF waiver shifts the focus of California's zero-emission vehicle transition. While large fleets may benefit from the removal of the mandatory ACF program, smaller fleets and the broader transportation sector should expect to encounter new regulations and restrictions aimed at achieving the state's climate goals.