2016-21203: Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles-Phase 2

Summary

EPA and NHTSA, on behalf of the Department of Transportation, are establishing rules for a comprehensive Phase 2 Heavy-Duty (HD) National Program that will reduce greenhouse gas (GHG) emissions and fuel consumption from new on-road medium- and heavy-duty vehicles and engines. NHTSA's fuel consumption standards and EPA's carbon dioxide (CO<INF>2</INF>) emission standards are tailored to each of four regulatory categories of heavy-duty vehicles: Combination tractors; trailers used in combination with those tractors; heavy-duty pickup trucks and vans; and vocational vehicles. The rule also includes separate standards for the engines that power combination tractors and vocational vehicles. Certain requirements for control of GHG emissions are exclusive to the EPA program. These include EPA's hydrofluorocarbon standards to control leakage from air conditioning systems in vocational vehicles and EPA's nitrous oxide (N<INF>2</INF>O) and methane (CH<INF>4</INF>) standards for heavy-duty engines. Additionally, NHTSA is addressing misalignment between the Phase 1 EPA GHG standards and the NHTSA fuel efficiency standards to virtually eliminate the differences. This action also includes certain EPA- specific provisions relating to control of emissions of pollutants other than GHGs. EPA is finalizing non-GHG emission standards relating to the use of diesel auxiliary power units installed in new tractors. In addition, EPA is clarifying the classification of natural gas engines and other gaseous-fueled heavy-duty engines. EPA is also finalizing technical amendments to EPA rules that apply to emissions of non-GHG pollutants from light-duty motor vehicles, marine diesel engines, and other nonroad engines and equipment. Finally, EPA is requiring that engines from donor vehicles installed in new glider vehicles meet the emission standards applicable in the year of assembly of the new glider vehicle, including all applicable standards for criteria pollutants, with limited exceptions for small businesses and for other special circumstances.

The agency’s own summary, as published.

What this changes

Amends 18 parts of the Code of Federal Regulations — the standing rules this notice rewrites.

• 40 CFR 9 OMB Approvals Under the Paperwork Reduction Act
• 40 CFR 22 Consolidated Rules of Practice Governing the Administrative Assessment of Civil Penalties and the Revocation/Termination or Suspension of Permits
• 40 CFR 85 Control of Air Pollution from Mobile Sources
• 40 CFR 86 Control of Emissions from New and In-Use Highway Vehicles and Engines
• 40 CFR 600 Fuel Economy and Greenhouse Gas Exhaust Emissions of Motor Vehicles
• 40 CFR 1033 Control of Emissions from Locomotives
• 40 CFR 1036 Control of Emissions from New and In-Use Heavy-Duty Highway Engines
• 40 CFR 1037 Control of Emissions from New Heavy-Duty Motor Vehicles
• 40 CFR 1039 Control of Emissions from New and In-Use Nonroad Compression-Ignition Engines
• 40 CFR 1042 Control of Emissions from New and In-Use Marine Compression-Ignition Engines and Vessels
• 40 CFR 1043 Control of NOX, SOX, and PM Emissions from Marine Engines and Vessels Subject to the MARPOL Protocol
• 40 CFR 1065 Engine-Testing Procedures
• 40 CFR 1066 Vehicle-Testing Procedures
• 40 CFR 1068 General Compliance Provisions for Highway, Stationary, and Nonroad Programs
• 49 CFR 523 Vehicle Classification
• 49 CFR 534 Rights and Responsibilities of Manufacturers in the Context of Changes in Corporate Relationships
• 49 CFR 535 Medium- and Heavy-Duty Vehicle Fuel Efficiency Program
• 49 CFR 538 Manufacturing Incentives for Alternative Fuel Vehicles