The California Air Resource Board (CARB) has withdrawn its request to enact the proposed Advanced Clean Fleets rule, which required fleets that are “well-suited for electrification” to reduce ...

Both proposals require the U.S. Environmental Protection Agency to grant CARB a waiver of federal rules to proceed. The state has withdrawn its waiver request for the ACF law, but the ACT proposal ...

[Stay on top of transportation news: Get TTNews in your inbox.] SACRAMENTO, Calif. — California’s efforts to limit pollution from diesel-powered trains and big rigs were stalled in ...