President Donald Trump on June 12 signed Congressional resolutions that revoked the Environmental Protection Agency waiver for three California vehicle...

It's up to the Senate now to act on the House vote to revoke EPA waivers for California heavy-duty-truck emissions rules.

Upon successful certification, deliveries of new Volvo VNL and VNR trucks with CARB-24 Omnibus compliant engines are expected to begin in the fourth quarter.

ACT Expo’s 2025 speakers will prepare fleets for the road ahead amid technology and industry evolution.

In his address to attendees at ATA's TMC Annual Meeting in Nashville, on March 10, ATA president Chris Spear said that U.S. environmental policies are no...

International’s S13 Integrated Powertrain has now been approved to run on renewable diesel fuel -- sustainable fuel that can directly replace traditional...

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.

Disquiet over the emissions regulations for heavy trucks boiled over into something like an outright revolt this past year. Here’s a look back at what happened.

Why does CARB seem so reluctant to designate renewable natural gas as a clean truck fuel for long-haul trucking fleets? HDT asked NACFE analyst Kevin Otto...

Low-carbon fuels are in the spotlight as California’s Air Board and Energy Commission prepare to review policies and update guidance.