The new requirements are a “game changer” and will lead to “widespread air quality improvements across the United States,” EPA Administrator Michael Regan said. For the first time in a ...

April 25 (Reuters) - The California Department of Motor Vehicles said Friday it is proposing to allow testing of self-driving heavy-duty trucks and other large vehicles on state public roads.

The lawsuit says the truck makers are engaged in "an industry-wide conspiracy" to phase out medium and heavy-duty internal combustion vehicles, driven by California's green regulations that aim to ...

SACRAMENTO, California — Massachusetts is joining Oregon in delaying its compliance with California’s clean-engine rules for heavy-duty trucks, Massachusetts’ air regulator announced Friday.