United States of America Environmental Protection Agency and the Department of Transportation programmes for Light-duty vehicle greenhouse gas emission standards and Corporate Average Fuel Economy Standards
United States of America Environmental Protection Agency and National Highway Traffic Safety Administration, Department of Transportation Programmes for Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium and Heavy-Duty Engines and Vehicles
United States of America Environmental Protection Agency and National Highway Traffic Safety Administration, Department of Transportation, Program for Revisions and Additions to the Motor Vehicle Fuel Economy Label: New Fuel Economy and Environment Labels for a New Generation of Vehicles