The fallout from the ongoing demise of the California Advanced Clean Truck (ACT) rule is picking up more controversy as environmental groups are asking key engine industry companies and their trade ...

Even though state-level transportation policy faces federal headwinds, California still retains significant autonomy to make ...

Four of 10 CARB-copying states outside California are hesitating on their zero-emission truck sales mandates, blaming immature truck technology and undeveloped infrastructure. The year has not been ...

Oregon’s attempts to curtail diesel emissions are in jeopardy following a state decision to delay enforcement of the Advanced Clean Trucks (ACT) rule until 2027. The ACT rule, which was approved by ...

Can you trust big truck makers to keep their word? It sure doesn’t look like it, as four giant truck makers have charged to court to try to get out of a deal they themselves shook hands on just a few ...

The Environmental Protection Agency said California can’t enforce its Heavy-Duty Inspection and Maintenance Regulation, known as Clean Truck Check, on vehicles registered outside the state. But ...

Last month, Congress passed a Congressional Review Act measure to block California from implementing the Advanced Clean Cars II regulation, Advanced Clean Trucks regulation, and the Heavy-Duty Low-NOx ...

[Stay on top of transportation news: Get TTNews in your inbox.] The relationship between America’s truck makers and the California Air Resources Board forged in the Clean Truck Partnership is ...

A $10 clean truck fund fee at the Port of Los Angeles will continue being collected for the next three years — but at least two L.A. harbor commissioners indicated it perhaps warrants a closer look ...