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

California has withdrawn requests for the EPA to give the state authority to enforce rules limiting emissions from ...

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

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 ...

Before Trump was elected, California planned to ban diesel freighters in favor for electric. Now it's being reversed.

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

The California Air Resources Board (CARB) has scrapped its controversial rule that would have required the use of zero-emissions locomotives in the state ...

California’s efforts to limit pollution from diesel-powered trains and big rigs were stalled in anticipation of pushback from ...

California regulators say the Trump administration is unlikely to approve the rules and that they have no choice but to ...