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Regulations for Emissions from Vehicles and Engines

Final Rule for Phase 1 Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles

Rule Summary

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EPA and NHTSA, on behalf of the Department of Transportation, are each finalizing rules to establish a comprehensive Heavy-Duty National Program that will reduce greenhouse gas emissions and fuel consumption for heavy-duty highway vehicles. NHTSA’s final fuel consumption standards and EPA’s final carbon dioxide (CO2) emissions standards are tailored to each of three regulatory categories of heavy-duty vehicles: Combination Tractors; Heavy-duty Pickup Trucks and Vans; and Vocational Vehicles. These Phase 1 rules include separate standards for the engines that power combination tractors and vocational vehicles.

Rule History

Additional Resources

Regulations for Emissions from Vehicles and Engines Home