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Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles

  • By: www.epa.gov
  • Date: August 19, 2011
Abstract:

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: (1) Combination Tractors; (2) Heavy-duty Pickup Trucks and Vans; and (3) Vocational Vehicles. The rules include separate standards for the engines that power combination tractors and vocational vehicles. Certain rules are exclusive to the EPA program. These include EPA’s final hydrofluorocarbon standards to control leakage from air conditioning systems in combination tractors, and pickup trucks and vans. These also include EPA’s final nitrous oxide (N2O) and methane (CH4) emissions standards that apply to all heavy-duty engines, pickup trucks and vans.

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