CARB Drops Request for Federal Approval of EV Truck Rules

This week the California Air Resources Board (CARB) withdrew its outstanding request for federal approval to fully implement its Advanced Clean Fleets (ACF) rule, which mandates the transition from diesel to zero-emission trucks and other vehicles. To have moved forward with the full ACF rollout, CARB would have needed a waiver of preemption from EPA under the federal Clean Air Act, which…