In summary
Because Trump is unlikely to approve them, California has no choice but to abandon its groundbreaking rules for zero-emission trucks and cleaner locomotives.
California has decided to abandon its groundbreaking regulations phasing out diesel trucks and requiring cleaner locomotives because the incoming Trump administration is unlikely to allow the state to implement them.
State officials have long considered the rules essential to cleaning up California’s severe air pollution and combating climate change.
The withdrawal comes after the Biden administration recently approved the California Air Resources Board’s mandate phasing out new gas-powered cars by 2035, but had not yet approved waivers for four other standards for diesel vehicles that the state adopted.
President-elect Donald J. Trump has threatened to revoke or challenge all zero-emission vehicle rules and California’s other clean-air standards. By withdrawing its requests for U.S. Environmental Protection Agency approval, the Newsom administration is signaling a dramatic step back as the state recalibrates in anticipation of the new Trump era.
https://calmatters.org/environment/2025/01/trump-california-withdraws-diesel-clean-air-rules/
