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 anticipation of the Trump administration rejecting them.
The move comes days before President-elect Donald Trump's inauguration. One of the rules, which the California Air Resources Board approved in 2023, would have banned new diesel-powered semi-trucks that transport goods through ports from being sold in the state starting in 2036. Another rule, which the agency approved the same month, would have banned locomotive engines more than 23 years old by 2030 and increased the use of zero-emissions technology to transport freight from ports and throughout railyards.
