For family farmers battling razor-thin profit margins, rising input costs and stubbornly low commodity prices, even modest ...

The agency says the changes could save truckers $12 billion while still maintaining environmental protections.

The pardons ended nine ordeals. The mandate that created them is still on the books, still in the field, and still pointed at the trucks that move America's military freight.

For months, diesel truck owners have wondered whether the Trump administration would dramatically roll back EPA emissions ...

Cummins and PACCAR are updating diesel engine software to give operators more time to address certain DEF-related issues ...