EPA Considers Rule ‘Locking In’ Heavy-Duty Truck NOx Emissions Cuts

EPA is considering “locking in” reductions in nitrogen oxides (NOx) emissions achieved by modern heavy-duty trucks in a forthcoming regulation as part of its “Cleaner Trucks Initiative,” says a top agency official. Matthew Leopold, EPA’s general counsel, told a Feb. 7 conference organized by the American Law Institute -- Continuing Legal Education in Washington, D.C., that the agency continues to eye a tightening of NOx standards for heavy-duty trucks in order to reduce air pollution. NOx is a “criteria” pollutant...