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DOT/NHTSA RIN: 2127-AK18 Publication ID: Spring 2011 
Title: FMVSS No. 124, Accelerator Control Systems Upgrade 
Abstract: The agency is considering several revisions to FMVSS No. 124. First, we are considering revisions to the test procedures for vehicles with electronically controlled throttles as well as electric vehicles and hybrid vehicles. These test procedures are the product of several workshops and public meetings. We anticipate that all vehicles would be able to meet them because it would not involve changes to the existing basic requirements of the standard. Second, we are considering adding a new requirement for a brake-throttle override system on light vehicles. Under certain conditions, this would require that the braking system overrides the throttle control in the event of a conflict. All vehicle manufacturers are in the process of equipping all of their U.S. vehicles with such technology, if they have not done so already. We anticipate that this new requirement would accommodate the current and planned override technologies. 
Agency: Department of Transportation(DOT)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 49 CFR 571.124   
Legal Authority: 49 USC 301   
Legal Deadline:
Action Source Description Date
NPRM  Statutory  Initiate Rulemaking  08/28/2009 
Action Date FR Cite
NPRM  12/00/2011    
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
International Impacts: This regulatory action will be likely to have international trade and investment effects, or otherwise be of international interest.
RIN Information URL:   Public Comment URL:  
RIN Data Printed in the FR: No 
Agency Contact:
Mike Pyne
Office of Crash Avoidance Standards
Department of Transportation
National Highway Traffic Safety Administration
1200 New Jersey Avenue SE,
Washington, DC 20590
Phone:202 366-4931