California has withdrawn requests for the EPA to give the state authority to enforce rules limiting emissions from diesel-powered trains and big rigs.

Withdrawal of request for EPA waiver means the state no longer seeks to enforce its zero emission vehicle mandate on fleets.

Because Trump is unlikely to approve them, California has no choice but to abandon its groundbreaking rules for zero-emission trucks and cleaner locomotives.

The California Air Resources Board has scrapped its controversial rule that would have required the use of zero-emissions locomotives in the state beginning in 2030. The board, or CARB as it’s known,

California abandons clean truck, locomotive rules after Biden's EPA doesn't grant waivers needed to depart from federal rules.

Unlike typical wildfires, smoke from the L.A. fires — consisting of toxic materials from burned down homes, cars, and more — poses additional risks to public health.

In order for California to promulgate vehicle emission standards without violating the Clean Air Act, it must receive a waiver from the EPA for any state law that regulates vehicles covered by the Act.

The rule aimed to end sales of new fossil-fuel-powered trucks by 2036 and require large fleets to transition to electric or hydrogen models by 2042.

While we are disappointed that U.S. EPA was unable to act on all the requests in time," a state official said.

California’s efforts to limit pollution from diesel-powered trains and big rigs were stalled in anticipation of pushback from the incoming Trump administration. The California Air Resources Board said Tuesday it withdrew its requests for federal approval to implement stricter emissions rules for locomotives and

California regulators say the Trump administration is unlikely to approve the rules and that they have no choice but to abandon groundbreaking regulations for zero-emission trucks and cleaner locomotives.