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DOT/FMCSA RIN: 2126-AC49 Publication ID: Fall 2021 
Title: ●Automatic Emergency Braking Systems 

The National Highway Traffic Safety Administration (NHTSA) will be seeking comments on a proposal to require and/or standardize equipment performance for automatic emergency braking (AEB) systems on heavy trucks (2127-AM36). That rulemaking is expected to propose performance standards for AEB systems on heavy trucks and accompanying test procedures for measuring the performance of the AEB systems in NHTSA compliance testing.  In support of that rulemaking, FMCSA is seeking information and comment concerning the maintenance and operation of AEB by motor carriers.

Agency: Department of Transportation(DOT)  Priority: Substantive, Nonsignificant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Prerule Stage 
Major: Undetermined  Unfunded Mandates: Undetermined 
CFR Citation: Not Yet Determined     (To search for a specific CFR, visit the Code of Federal Regulations.)
Legal Authority: Not Yet Determined   
Legal Deadline:
Action Source Description Date
Other  Statutory  NHTSA is planning a date of April 2022 for their AEB NPRM. Therefore, FMCSA would issue this ANPRM shortly after.  05/01/2021 
Action Date FR Cite
ANPRM  06/00/2022 
Regulatory Flexibility Analysis Required: Undetermined  Government Levels Affected: Undetermined 
Federalism: Undetermined 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Related RINs: Related to 2127-AM36 
Agency Contact:
Sarah Stella
Division Chief
Department of Transportation
Federal Motor Carrier Safety Administration
1200 New Jersey Avenue, SE,
Washington, DC 20590
Phone:202 493-0192