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DOT/NHTSA RIN: 2127-AK18 Publication ID: Spring 2010 
Title: FMVSS No. 124, Accelerator Control Systems Upgrade 
Abstract: This rulemaking would upgrade FMVSS No. 124 to bring it up-to-date and resolve questions about how to treat new electronic accelerator control systems, or any systems other than purely mechanical ones, which were the only kind in use when FMVSS No. 124 was last amended in 1973. The agency has had to issue a number of interpretations about the applicability of FMVSS No. 124 to electronic components and connections and by specifying new compliance test procedures. This is increasingly necessary as mechanical linkages are phased out altogether in favor of throttle-by-wire systems with no direct mechanical linkage between the accelerator pedal and the throttle on the engine. 
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 
Timetable:
Action Date FR Cite
NPRM  12/00/2010    
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: www.regulations.gov   Public Comment URL: www.regulations.gov  
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
Email: mike.pyne@dot.gov