EPA proposes weakening heavy-duty truck pollution rules
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The American Trucking Associations had called for changes to the rules, writing in February that the Biden-era policies would require "a premature rollout of commercial motor vehicles with unproven engine technologies onto our highways." The group specifically asked the agency to allow truck manufacturers to pay penalties instead of comply with the rules, as long as they were working on developing compliant engines, an option the EPA included in the proposal.

Environmental groups criticized the proposed changes, citing concerns about the health hazards of emissions. "Clean truck standards save lives," Katherine García, director of the Sierra Club's Clean Transportation for All campaign, wrote in a statement emailed to NPR. "Weakening them would mean more toxic pollution in the air and more families paying the price with their health.

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