An official website of the United States government Here ShowYouknow United States EPA Environmental Protection Search EPAgov Agency Environmental Topics Laws & Regulations Report a Violation About EPA CONTACT US U.S. Environmental Protection Agency TurN Washington St EPA Proposes Stronger Standards for Heavy-Duty Vehicles to Promote Clean Air These new standards will drastically cut dangerous pollution by harnessing recent advancements in vehicle technologies from across the trucking industry asit advances toward a zero-emissions transportation future. Read the news release