Trump EPA moves to block California from green inspections of out-of-state trucks

The Environmental Protection Agency has moved to block a California regulation aimed at reducing emissions from diesel trucks, arguing that it serves as a backdoor emission rule that would be imposed on the entire nation.

The EPA said on Monday that it is proposing to disapprove California’s Heavy-Duty (HD) Inspection and Maintenance (I/M) Requirements, also known as the Clean Truck Check, which requires periodic vehicle emission testing and monitoring to identify trucks in need of emissions-related repairs. 

The agency argued that the state’s requirement conflicts with federal law, as it would apply to nearly all diesel and alternative fuel heavy-duty vehicles over 14,000 pounds that operate on California public roads and highways, even if they are not registered in the state...