California has withdrawn requests for the EPA to give the state authority to enforce rules limiting emissions from ...

California withdrew requests Tuesday for the federal government to allow the state to enforce rules limiting emissions from diesel-powered trains and big rigs in ... banning the sale of new ...

(AP) — California’s efforts to limit pollution from diesel-powered trains and big rigs were stalled in anticipation ... it would have phased out the sale of new diesel-powered semi-trucks ...