2127-AM36 202504 Unified Agenda of Federal Regulatory and Deregulatory Actions 2127 National Highway Traffic Safety Administration NHTSA 2100 Department of Transportation DOT Heavy Vehicle Automatic Emergency Braking

Pursuant to a statutory mandate in the Infrastructure Investment and Jobs Act, this notice would seek comments on a revised proposal to require and/or standardize equipment performance for automatic emergency braking on heavy trucks and motor carrier maintenance requirements for vehicles equipped with such technology. For several years, NHTSA has researched forward collision avoidance and mitigation technology on heavy vehicles, including forward collision warning and automatic emergency braking systems. This rulemaking proposes test procedures for measuring performance of these systems. This is a joint rulemaking of the National Highway Traffic Safety Administration (NHTSA) (RIN 2127-AM36) and Federal Motor Carrier Safety Administration (FMCSA) (RIN 2126-AC49).

]]> Economically Significant Previously Published in The Unified Agenda Proposed Rule Stage Yes No Regulatory 49 CFR 571 49 U.S.C. 30111 49 U.S.C. 30115 49 U.S.C. 30117 49 U.S.C. 30166 49 U.S.C. 322 delegation of authority at 49 CFR 1.95 Statutory Final 11/15/2023 Complete rulemaking No NPRM 07/06/2023 88 FR 43174 NPRM Comment Period End 09/05/2023 Supplemental NPRM 12/00/2025 No No None No No www.regulations.gov www.regulations.gov No No 2126-AC49 Related to Hisham Mohamed General Engineer 2127 National Highway Traffic Safety Administration NHTSA 202 366-0307 hisham.mohamed@dot.gov 1200 New Jersey Avenue SE, Washington DC 20590