[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 ...

The withdrawal means CARB is now no longer seeking to enforce its ZEV mandate on fleets. The move comes just days before President-elect Donald Trump is sworn in for a second term on January 20.

In a statement, CARB Chair Liane Randolph stated, "While we are disappointed that U.S. EPA was unable to act on all the requests in time, the withdrawal is an important step given the uncertainty ...

On January 13, 2025, the California Air Resources Board (CARB) sent a letter to the U.S. Environmental Protection Agency (EPA) withdrawing the state’s request for a Clean Air Act waiver for its ...

In a brief letter Monday to Jane Nishida, acting administrator of the Environmental Protection Agency, Steven Cliff, executive officer of the California Air Resources Board, said CARB was withdrawing ...