. /.   WORLD TRADE  
ORGANIZATION  G/TBT/N/USA/132/Add.1 
10 December 2010  
 (10-6662) 
Committee on Technical Barriers to Trade Original:   English 
  
 
NOTIFICATION  
 
Addendum
 
  
 The following communication, dated 30 November 2010, is being circulated at the request of 
the delegation of the United States
.  
 
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TITLE:  Federal Motor Vehicle Safety Standards;  Child Restraint Systems; Hybrid III 10–Year–Old 
Child Test Dummy  AGENCY:  National Highway Traffic Safety Administration (NHTSA), Department of 
Transportation (DOT) 
 
ACTION:  Supplemental notice of proposed rulemaking (SNPRM)  SUMMARY:  This document proposes to amend Fede ral Motor Vehicle Safety Standard (FMVSS) 
No. 213, Child Restraint Systems, regarding a Hybrid III 10–year–old child test dummy that the 
agency seeks to use in the complia nce test procedures of the standard. This document supplements a 
2005 notice of proposed rulemaking (NPRM) and a 2008 SNPRM previously published in this rulemaking (RIN 2127-AJ44) regarding this test dum my.  In the 2005 NPRM, in response to Anton's 
Law, NHTSA proposed to adopt the 10–year–old child test dummy into FMVSS No. 213 to test child restraints for older children.  Subsequently, to address variation that was found in dummy readings 
due to chin–to–chest contact, NHTSA publis hed the 2008 SNPRM to propose a NHTSA–developed 
procedure for positioning the test dummy in belt-positioning seats.  Comments on the SNPRM 
objected to the positioning procedure, and some sugg ested an alternative procedure developed by the 
University of Michigan Transportation Research  Institute (UMTRI).  Today's SNPRM proposes to 
use the UMTRI procedure to position the test dummy  rather than the NHTSA–developed procedure.  
We note that the 10–year–old child dummy may some times experience stiff contact between its chin 
and upper sternal bib region which may result in an unrealistically high value of the head injury 
criterion (HIC)
1 referenced in the standard.  Accordi ngly, NHTSA proposes that the dummy's HIC 
measurement will not be used to assess the compliance of  the tested child restraint.  This SNPRM also 
proposes other amendments to FMVSS No. 213, including a proposal to permit NHTSA to use, at the 
manufacturer's option, the Hybrid II or Hybrid III versions of the 6–year–old test dummy, and a 
proposal to use the UMTRI procedure to position the Hybrid III 6–year–old and 10–year–old 
dummies when testing belt-positioning seats.  DATES:  You should submit your comments early enoug h to ensure that the docket receives them not 
later than 24 January 2011.  However, comments on our reinstating a provision in FMVSS No. 213 
                                                     
 
1Throughout this document, HIC refers to the head injury criterion computed using a 36 millisecond 
(msec) time interval  G/TBT/N/USA/132/Add.1 
Page 2  
 
  that permitted NHTSA to use, at the manufacturer's op tion, the Hybrid II or Hybrid III versions of the 
6–year–old dummy in compliance testing should be r eceived no later than 30 days after publication of 
this document in the Federal Register  Relevant 2008 SNPRM:  
http://edocket.access.gpo.gov/2008/E8-856.htm
 
http://edocket.access.gpo.g ov/2008/pdf/E8-856.pdf  
  FULL TEXT URLs:  
http://edocket.access.gpo.gov/2010/2010-29545.htm
 
http://edocket.access.gpo.g ov/2010/pdf/2010-29545.pdf  
    
 
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