OAL approves first readoption of CARB emergency vehicle emissions regulations; filed March 26, 2026 with effective April 1, 2026 and expiration July 1, 2026

CARB’s emergency vehicle emissions rulemaking page indicates the Office of Administrative Law (OAL) approved the first readoption of the emergency vehicle emissions regulations and that the readoption was filed with the Secretary of State on March 26, 2026. CARB states the readopted emergency regulations become effective April 1, 2026 and will expire July 1, 2026. Compliance teams impacted by these emergency vehicle emissions provisions should account for the operative window through July 1, 2026 and monitor subsequent readoptions or permanent rulemaking.