Under existing law, the State Air Resources Board has adopted the Advanced Clean Fleets Regulations, which imposes various requirements for transitioning local, state, and federal government fleets of medium- and heavy-duty trucks, other high-priority fleets of medium- and heavy-duty trucks, and drayage trucks to zero-emission vehicles, as provided. This bill would, until January 1, 2030, exempt emergency telecommunications vehicles owned or purchased by emergency telecommunications providers that are used to participate in the federal Emergency Alert System, to provide access to 911 emergency services, or to provide wireless connectivity during service outages from specified requirements in the above-described regulations.