   
  
G/TBT/N/USA/699/Add.1  
 
21 May 2019  
(19-3497) Page: 1/1 
Committee on Technical Barriers to Trade  Original: English  
 
  
NOTIFICATION  
Addendum  
The following communication, dated 20 May 2019, is being circulated at the request of the delegation 
of the United States of America .  
 
_______________  
 
 
TITLE: Federal Motor Vehicle Safety Standards; Accelerator Control Systems  
AGENCY: National Highway Traffic Safety Administration (NHTSA), Department of Transportation 
(DOT)  
ACTION: Proposed rule; withdrawal  
SUMMARY: This action withdraws the notice of proposed r ulemaking (NPRM) published in the Federal 
Register on 16 April 2012, proposing amendments to Federal Motor Vehicle Safety Standard FMVSS 
No. 124, Accelerator Control Systems. The NPRM proposed to make two amendments to the 
standard: add a new brake -throttl e override (BTO) requirement to address unintended acceleration 
situations and amend the return -to-idle requirements to include electronic throttle control (ETC) 
systems. After further analysis of the comments received and other considerations, the agency has 
decided to withdraw the rulemaking proposal because: the widespread adoption of the BTO system 
makes FMVSS changes unnecessary and a broader understanding of safe design of vehicle electronic 
control systems is needed to make an informed decision on re gulating return -to-idle on ETC systems.  
DATES: The NPRM published in the Federal Register on 16 April 2012, at 77 FR 22638, is withdrawn 
as of 14 May 2019.  
https://www.govin fo.gov/content/pkg/FR -2019-05-14/html/2019 -09820.htm  
https://www.govinfo.gov/content/pkg/FR -2019-05-14/pdf/2019 -09820.pdf  
https://members.wto.org/crnattachments/2019/TBT/USA/19_2957_00_e.pdf  
__________  