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

The California Air Resources Board adopted the clean fleets and locomotive rules in 2023. Not seeking the waivers is “an ...

California has withdrawn requests for the EPA to give the state authority to enforce rules limiting emissions from ...

President-elect Trump has threatened to revoke or challenge all zero-emission vehicle rules and California’s other clean-air ...

California has withdrawn requests for the EPA to give the state authority to enforce rules limiting emissions from ...

Several environmental groups are suing California air regulators over their recent update of a contentious climate program, ...

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 ...

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 ...