Federal government announces multi-prong approach to vehicle emission reductions
On August 5, 2021, multiple announcements from EPA, DOT, and President Biden unveiled new plans to reduce vehicle emissions in the U.S. First, President Biden issued an Executive Order directing various agencies in the federal government to begin rule development to reduce air emissions from vehicles of all sizes. Following the White House announcement, EPA and DOT issued statements sharing more detail on the various rulemaking actions being started.
First, EPA rolled out the “Clean Truck Plan,” which focused on the emissions of heavy-duty vehicles, including long-haul tractors, buses, commercial delivery trucks, etc. The plan indicates EPA will issue two regulations over the next three years. The first, scheduled for completion by the end of 2022, will set new nitrogen oxide (NOx) emission standards for heavy-duty vehicles beginning with model year (MY) 2027. It will also update the existing Phase 2 greenhouse gas (GHG) standards that apply to some heavy-duty vehicles.
The second rulemaking will continue driving GHG emission reductions from all heavy-duty engines and vehicles, starting as soon as MY 2030. Addressing passenger cars and light-duty trucks next, EPA shared a draft rule revising existing GHG emissions standards. The proposed light-duty standards would begin in vehicles MY 2023 and increase in stringency through MY 2026, achieving significant reductions in emissions of GHG as well as other pollutants. Addressing potential impacts to the automobile manufacturing industry, the EPA press release states, “manufacturers would be able to comply with these stronger standards using technology that is already used in today’s vehicles including technologies that improve efficiency of internal combustion vehicles, with modest increases in the numbers of electric vehicles entering the fleet. These standards provide adequate lead time for manufacturers to comply with reasonable costs.”
Last, following direction from the Executive Order, DOT’s National Highway Traffic Safety Administration (NHTSA) announced the kick-off of federal fuel economy standard rulemaking. These efforts will:
- Revise standards for MY 2024–2026 passenger car and light duty trucks,
- Propose new MY 2027–2030 passenger cars and light duty truck fuel standards, and
- Propose new standards for medium and heavy-duty vehicles beginning as early as MY 2027.
Expect more developments to unfold on each of these rulemaking efforts, starting with the first virtual public hearing session scheduled for August 25, 2021, to discuss the draft Light-Duty Vehicle Greenhouse Gas Emission rule.