Emergency Vehicle Emissions Regulation Permanently Adopted

Mon, 20 Apr 2026 18:04:21 +0000
Environmental Protection

The California Air Resources Board permanently adopted the Emergency Vehicle Emissions Regulations initially enacted in 2025 as a temporary measure. The permanent adoption responds to federal disapproval of California's waivers for Advanced Clean Cars II and Heavy-Duty Engine and Vehicle Omnibus regulations. The amendments confirm that earlier vehicle emissions standards remain in effect, providing manufacturers flexibility to certify to pre-ACC II and Omnibus emission standards while voluntarily complying with newer requirements.