Trucking Regulations - Emissions
U.S. Regulations
Below is a listing of emissions-specific regulations that are approved or pending, as well as their potential impact on the market.
| Regulation | Agency | Introduction | Status | Impact | Milestones | Next Steps | Proposed Implementation |
|---|---|---|---|---|---|---|---|
| GHG-2 | EPA & NHTSA | Jun'15 | Final rule published Courts ruled EPA and FMCSA did not have authority to regulate trailers | CY2018 Trailers CY2018 Glider Kits MY2021 Tractors Implementation through 2027 | TTMA suit with US Court of Appeals Dec'16; Court implements stay on trailers 10/27/17; Oral arguments on 9/15/20; Court stays NHTSA regs on 9/29/20; Judge panel revised 1/12/21; Appeals ruling Nov'21 for TTMA 11/12/21 | Appeal window closed; no next steps | EPA and NHTSA regs now under "stay" orders for trailers MY2021 tractors still as scheduled |
| GHG-3 | EPA | Apr'23 | NPRM | Revises existing MY2027 vehicle standards for daycabs and vocational ; adds increasingly stringent GHG emissions standards for all HD CVs annually MY2027- 32; assumes ZEVs will be necessary as part of compliance | NPRM published 4/12/23; public hearings held May 2-4; House and Senate GOP members sent letters to EPA urging it to rescind the proposed rule | Expect rule to be finalized by end of year | |
| Control of Air Pollution From New Motor Vehicles: Heavy Duty Engine and Vehicle Standards | EPA | Nov'18 | Final Rule Published in Docket 1/24/23 | NOx reduction goals impact HD engines; increased useful life and warranty; implementation for MY27 | ANPRM published 1/21/20 for "Cleaner Truck Initiative"; Comment period closed 2/20/20; NPRM published 3/28/22; final rule pre-published 12/20/22; final rule published in docket 1/24/23 | Senate and House voted to roll back through legislation. Biden vetoed. | On MY2027 and later HD vehicles |
| NPRM Greenhouse Gas Emissions Measure | FHWA | Jul'22 | Proposal | FHWA to set up measurement and reporting method for GHG emissions that come from on-highway transportation; states to set declining GHG emission targets | Proposed, comments requested | Comment period closed 10/13/22 | TBD |
| Preserving Choice in Vehicle Purchases Act | U.S. House/Senate | Mar'23 | Introduced | Would restrict the EPA from issuing waivers under the CAA that would block the sale or use of ICE vehicles | Passed House (222-190) 9/14/23; received in Senate and referred to Committee on Environment and Public Works | full House consideration | TBD |