nox standards

Advocates Urge Paccar, Cummins, Daimler to Stop Weakening Heavy-Duty NOx Rules

A coalition of environmental and health groups has written to Paccar, Cummins, and Daimler, urging them to stop lobbying against EPA's 2027 heavy-duty NOx standards. The groups say the companies publicly claim readiness while privately seeking to undermine the rules, which would cut emissions from trucks that cause significant pollution.