California Air Resources Board Modifies Advanced Clean Fleet Regulations

On March 23, 2023 the California Air Resources Board published proposed modifications to the Advanced Clean Fleet rule that would require certain fleets to deploy increasing percentages of  zero-emission vehicles (ZEVs) starting in 2024. These modifications would also establish a clear end date of model year 2036 for new medium- and heavy-duty internal combustion engine vehicle sales.

“Accelerating the 100 percent manufacturer zero-emission vehicle sales requirement sends a stronger market signal indicating the end of combustion-powered sales in California in 2036 rather than in 2040,” stated the California Air Resources Board. “Given the long lead time before this requirement takes place, manufacturers have sufficient time to plan their transition to installing all electric drivetrains.”

“Moving up the 100 percent sales date is likely to improve availability of battery-electric and hydrogen fuel cell vehicles in all configurations, increases the likelihood manufacturers will coordinate with infrastructure providers, and design vehicles to meet the needs for all duty cycles. An earlier date also places more of the onus on manufacturers to develop these technologies and to make them available for fleets at a competitive price rather than placing the primary responsibility on fleet owners.”

The California Air Resources Board will accept public comments on the proposed modifications through April 7, 2023. The Board will consider adopting the proposed modifications at its hearing scheduled for April 27, 2023.