Regulation ChangeLiveLive Regulation
CARB adopts amendments to Advanced Clean Trucks and Zero-Emission Powertrain Certification standards
Advanced Clean Trucks (ACT) Regulation and Zero-Emission Powertrain (ZEP) Certification StandardsCalifornia Air Resources Board (CARB)California
Announced
Mar 26, 2026
Description
The California Air Resources Board (CARB) approved amendments to the Advanced Clean Trucks (ACT) regulation and Zero-Emission Powertrain (ZEP) Certification standards. The amendments provide flexibility for manufacturers in meeting zero-emission truck sales requirements while maintaining emissions benefits. The ACT regulation requires truck manufacturers to sell zero-emission vehicles as an increasing percentage of their California sales, and ZEP Certification establishes standards for zero-emission powertrain certification.
Sources
Key Findings
CARB adopts amendments to Advanced Clean Trucks and Zero-Emission Powertrain Certification standards
 # California Air Resources Board ## Main navigation ## CARB approves amendments to clean truck standards to provide flexibility while maintaining emissions benefits *For immediate release* ## Contacts ## Categories **SACRAMENTO** – The California Air Resources Board (CARB) today approved amendments to the state’s [Advanced Clean Truck](//ww2.arb.ca.go