"California's Clean Fleet Regulations Face Setbacks Amidst Political and Technical Challenges"

California is accelerating the implementation of its climate change policies, fearing potential hindrances from a second Trump administration. The state's Air Resources Board has delayed enforcing new rules, such as the mandate for trucking fleets to transition to zero-emission vehicles, due to pending federal approvals from the EPA. The Biden administration's EPA is currently facing a backlog of waiver requests from California, which seeks to set stricter emissions standards than federal levels. Environmentalists and state officials are concerned that bureaucratic delays could jeopardize these climate initiatives, especially if there is a shift in presidential administration following the next election.