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United States Environmental Protection Agency
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Regulations for Emissions from Vehicles and Engines
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This site contains regulations and rulemaking documents related to vehicle and engine emissions standards.
What are you looking for?
Regulations for Emissions from Vehicles and Engines
Onroad
Regulations for onroad vehicles and engines
Nonroad
Regulations for nonroad vehicles and engines
Greenhouse Gas
Regulations for:
Light-duty passenger cars & trucks
Commercial trucks & buses
Aircraft
Federal fleets (EISA 141)
Related Topics
Certification and Compliance for Vehicles and Engines
Vehicles and Engines
Green Vehicle Guide
Fuels Registration, Reporting, and Compliance Help
Air Enforcement
Diesel Fuel Standards
Gasoline Standards
Renewable Fuel Standard Program
Violations and Recalls of Vehicles and Engines
