Volvo Trucks has introduced new stop\start technology for its diesel engines in Europe.

New guidance to engine manufacturers will reduce "derating," an automatic trigger forcing diesel engines to operate at a reduced capacity when the emissions...

Climate legislators overreached badly with the Advanced Clean Fleets rule. And now they’re paying a heavy price for their arrogance.

Despite the current market uncertainty, Brian Antonellis, senior vice president of fleet operations for Fleet Advantage, thinks some fleets will prebuy...

The Western States Trucking Association is challenging a deal that truck and engine makers made with California to continue to meet the state's truck...

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

Noregon now offers heavy-duty truck owners a pre-scan to detect issues that could run afoul of California's Clean Truck Check rules.

There are six warning signs your diesel particulate filter (DPF) needs maintenance - and it's more than just the DPF light on the dashboard.

The past year has been a rough one for climate activists. What would it mean for the trucking industry’s premier clean-fleet technology trade show?

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