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Corporate Average Fuel Economy

Research Supporting the Phase 2 Proposal

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NAS Study

  • Reducing the Fuel Consumption and Greenhouse Gas Emissions of Medium and Heavy-Duty Vehicles, Phase Two First Report

NHTSA Studies

  • Review and Analysis of Potential Safety Impacts and Regulatory Barriers to Fuel Efficiency Technologies and Alternative Fuels in Medium- and Heavy-Duty Vehicles
    • Peer Review Report
  • Commercial Medium- and Heavy-Duty (MD/HD) Truck Fuel Efficiency Technology Study – Report #1 (Revised)
    • Peer Review Report
  • Commercial Medium- and Heavy-Duty (MD/HD) Truck Fuel Efficiency Technology Study – Report #2
    • Peer Review Report
    • Peer Review Comment Resolution Report (Technology Study Reports #1 & #2)
  • Commercial Medium- and Heavy-Duty (MD/HD) Truck Fuel Efficiency Technology Cost Study
    • Peer Review Report
    • Peer Review Comment Resolution Report
  • Effects of Tire Rolling Resistance Levels on Class-8 Tractor Trailer Stopping Distance Performance

Engine Maps

Southwest Research Institute (SwRI) engine maps or delta maps used in research supporting Notice of Proposed Rulemaking (NPRM)

  • Memo on Southwest Research Institute (SwRI) engine maps or delta maps used in research supporting Notice of Proposed Rulemaking (NPRM)
  • Ford 3.5-liter V-6
  • Ford 6.2-liter V-8
  • Cummins 6.7 Liter 300 HP (base) & 4.5 Liter 256 HP (variant)
  • Cummins 6.7 Liter 385 HP (base) & 4.5 Liter 256 HP (variant)
  • Detroit 14.8-liter DD15 (base) and 12.3-liter variant
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