Medium- and Heavy-Duty Truck Retrofit Study

The Oregon Department of Environmental Quality (DEQ) conducted a study of potential requirements for maintaining and retrofitting medium- and heavy-duty trucks to reduce aerodynamic drag and greenhouse gas (GHG) emissions. As part of the study, DEQ evaluated comparable federal and state requirements; financing opportunities for initial capital costs; differences among trucks; a schedule for implementation; the feasibility of requiring truck distributors to disclose applicable GHG reduction requirements; exemptions and deferrals; and potential restrictions of engine use by parked commercial vehicles. DEQ submitted the final report, entitled “Improving Truck Efficiency and Reduced Idling,” to the Oregon Legislature. (Reference House Bill 2186, 2009).