US Environmental Protection Agency (EPA)
Building on the successes of EPA’s regulatory and voluntary efforts to reduce emissions from diesel engines, EPA created the National Clean Diesel Campaign (NCDC) to work aggressively to reduce the pollution emitted from diesel engines across the country through the implementation of varied control strategies and the aggressive involvement of national, state, and local partners.
EPA currently has programs focusing on Clean School Bus, Ports & Marine, Clean Construction, SmartWay Transport, and Clean Agriculture.
A voluntary program between EPA and the freight industry that will increase the energy efficiency while significantly reducing air pollution and greenhouse gases.
Guidance, regulations, and general information on emission standards for heavy-duty highway diesel engines and vehicles.
General information, reports, and proposals for nonroad engine emission standards (e.g., marine diesel engines).