California’s Air Resources Board sent a letter on Jan. 14 to the U.S. Environmental Protection Agency, withdrawing its prior waiver request that would have forced a transition from diesel to zero-emission trucks in the state.
The federal environmental agency responded to the board’s withdrawal request on Jan. 14 with notice that no further action will be taken, and the matter is considered closed.
Regulators had previously requested in November 2023 that the agency approve a waiver to allow the state to enforce stricter rules for automobiles and diesel trucks.
Federal authorities agreed to some of the requests, but such related to the diesel truck rules were not yet decided….