An official website of the Urited States government Here s howyou know United States EPA Environmental Protection Search EPA gov Agency Environmental Topics Laws & Regulations Report a Violation About EPA CONTACT US U.S: Environmental Protection Agency TCan Wasnngton 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 as it advances toward a zero-emissions transportation Read the news release "nedi 1 future:.