Our mission is to be your trusted navigator through the dynamic landscape of ZEV. We'll illuminate their policies with crystal-clear explanations, ensuring you understand the principles that guide their operations. Moreover, we'll unveil the thrilling innovations that make ZEV a trailblazer in its field. Get ready to discover the cutting-edge technologies that set them apart, and understand how these advancements shape not only their products but potentially the industry as a whole.

Welcome to ZEV Help! Your Guide to Zero-Emission Commercial Vehicles
In January 2025, the California Air Resources Board (CARB) withdrew its EPA waiver request for the Advanced Clean Fleets (ACF) regulation's fleet purchase requirements. Without the EPA waiver, the ACF mandates for high-priority and federal fleets — including ZEV purchase and acquisition requirements beginning January 1, 2024 — cannot be enforced by California. Monitor ARB.CA.gov for the latest enforcement status and compliance guidance.
In January 2025, the California Air Resources Board (CARB) withdrew its EPA waiver request for the Advanced Clean Fleets (ACF) regulation's fleet purchase requirements. Without the EPA waiver, the ACF mandates for high-priority and federal fleets — including ZEV purchase and acquisition requirements beginning January 1, 2024 — cannot be enforced by California. Monitor ARB.CA.gov for the latest enforcement status and compliance guidance.
Applies to any entity that owns, operates or directs the operation of one or more vehicles in California on or after Jan 1 2024 ( High Priority Fleets) AND:
Any entity with $50+ million annual revenue (Nationwide) per preceding calendar year
(or) Any entity that owns or controls 50+ vehicles
(or) A fleet owner whose combined fleet under common ownership & control totals 50+ vehicles
(or) Any federal agency that operates 1+ vehicles in California
California Fleet
If a vehicle is operated in California at any time during a calendar year, it will be considered part of California fleet for the entire calendar year (only ‘California Fleet’ is subject to ACF )
California Operation
No time or minimum miles requirement =
“Single truck crossing the CA border single time in a year on duty or off duty”
>8500 lbs vehicle added to a fleet must be a ZEV (Jan 1 2024) :
Fleets can purchase ICE Vehicles as long as ZEV targets are met :