88 FR 25926
EPA proposed to promulgate new greenhouse gas (GHG) standards for heavy-duty highway vehicles starting in model year (MY) 2028 through MY 2032 and to revise certain GHG standards for MY 2027, including updating discrete elements of the Averaging Banking and Trading program; to add warranty requirements for batteries and other components of zero emission vehicles; to revise certain highway heavy-duty vehicle provisions and certain test procedures for heavy-duty engines; and to revise regulations addressing preemption of state regulation of new locomotives and new engines used in locomotives.