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The US tightens greenhouse gas emission standards for heavy-duty vehicles


The new rules are supposed to improve air quality and slow climate change.

The Environmental Protection Agency (EPA) announced the toughest US standards yet for greenhouse gas emissions from heavy-duty vehicles like big rigs and buses. “On behalf of everyone who breathes, thank you,” Paul Billings, national senior vice president of public policy at the American Lung Association, said during a press call with EPA Administrator Michael Regan. While those rules are supposed to cut greenhouse gas emissions , they’re more lax than what the Biden administration initially proposed before facing opposition from car companies and labor unions.

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