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The Trump administration has announced it will no longer criminally prosecute “diesel delete” cases of truck owners altering emissions systems in violation of EPA regulations. What does that mean for heavy-duty fleets?
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California is issuing emergency rules reinstating prior emissions standards to ensure vehicles can still be sold in California amid unprecedented legal uncertainty.
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Truck makers say they're caught in the crossfire as the Trump administration challenges the California Air Resources board over California's contention that the Clean Truck Partnership agreement is still valid.
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The EPA’s plan to rescind greenhouse gas emissions rules is winning trucking industry support but sparking environmental backlash — and raising questions for early-adopter fleets that have already invested based on expected regulations.
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Climate legislators overreached badly with the Advanced Clean Fleets rule. And now they’re paying a heavy price for their arrogance.
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Could a Supreme Court decision regarding a challenge to California's Clean Car standards eventually have implications for CARB's Clean Truck standards?
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The much-anticipated 2027 Class 8 truck prebuy fizzled out before it ever got off the ground. HDT asked Kenny Vieth of ACT Research why.
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It's up to the Senate now to act on the House vote to revoke EPA waivers for California heavy-duty-truck emissions rules.
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The Trump administration is seeking to revoke California’s EPA waivers approved under the Biden administration, with the aim of killing the state's Advanced Clean Trucks and Omnibus NOx rules.
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Fines of more than $525 million have been levied against Hino Motors for falsifying data related to emissions performance by its heavy-duty diesel engines.
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