emissions regulations Archives - Truck Drivers USA

Volvo Trucks and Mack Trucks are rolling out updated DEF software that gives drivers more time to repair emissions system issues before engine derates and speed restrictions take effect.

August 17, 2026

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Volvo, Mack Expand DEF Software Updates for Heavy-Duty Trucks

Volvo Trucks North America and Mack Trucks have announced updated diesel exhaust fluid (DEF) inducement software designed to give fleets and drivers more time ...

The EPA is accepting public comments on proposed revisions to its 2027 heavy-duty truck emissions rule, including changes to engine derates, compliance timelines, and emissions-related warranties.

July 21, 2026

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EPA Seeks Public Input on Proposed Changes to 2027 Truck Emissions Rule

The U.S. Environmental Protection Agency (EPA) is seeking public feedback on proposed revisions to its 2023 heavy-duty truck emissions rule, allowing truck drivers, owner-operators, ...

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