California has decided to abandon its phase out of diesel trucks and requiring cleaner locomotives because of the incoming ...

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

California has withdrawn requests for the EPA to give the state authority to enforce rules limiting emissions from ...

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

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

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 ...

California withdrew plans for pioneering clean-air regulations targeting diesel trucks and trains on January 14, citing ...

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

Facing the likelihood of repeal, California has withdrawn an emissions waiver request that would have effectively mandated ...

To help offset the added costs of not burning, the California Legislature appropriated $180 million to CARB for the San ...

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

The California Air Resources Board said Tuesday it withdrew its requests for federal approval to implement stricter emissions rules for locomotives and semi-trucks because the U.S. Environmental ...