G/TBT/N/USA/1761/Add.1  
 
27 July 2022 
(22-5671) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
 
NOTIFICATION  
Addendum  
The following communication , dated  27 July 2022, is being circulated at the request of the delegation 
of the United States of America . 
 
_______________  
 
 
Title:  Hazardous Materials: Harmonization with International Standards  
 
Reason for Addendum:  
[ ] Comment period changed - date:   
[ ] Notified measure adopted - date:  
[X] Notified measure published - date: 26 July 2022  
[X] Notified measure enters into force - date: 25 August 2022; Effective date: This rule is 
effective 25 August 2022.  
Voluntary compliance date: 1 January 2021.  
Delayed compliance date: 26 July 2023.  
Incorporation by reference date: The incorporation by refere nce of certain publications 
listed in this rule is approved by the Director of the Federal Register on 25 August 2022. 
The incorporation by reference of certain other publications listed in this rule was 
approved by the Director of the Federal Register as of 11 May 2020.  
[X] Text of final measure available from1:  
https://www.govinfo.gov/content/pkg/FR -2022-07-26/html/2022 -15358.htm  
https://www.govinfo.gov/content/pkg/FR -2022-07-26/pdf/2022 -15358.pdf  
https://members.wto.org/crnattachments/2022/TBT/USA/final_measure/22_4960_00_
e.pdf 
[ ] Notified measure withdrawn or revoked - date:  
Relevant symbol if measure re -notified:   
[ ] Content or scope of notified measure changed  and text available from1:  
New deadline for comments (if applicable):   
[ ] Interpretive guidance issued and text available from1:  
[ ] Other:  
 
Description:  TITLE: Hazardous Materials: Harmonization With International Standards  
AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), Department of 
Transportation (DOT)  
 
1 This information can be provided by including a website address, a pdf attachment, or other 
information on where the text of the final /modified  measure and/or interpretive guidance can be obtained.  G/TBT/N/USA/1761/Add.1  
 
- 2 - 
 
  ACTION: Final rule  
SUMMARY: PHMSA is amending the Hazardous Materials Regulations (HMR) to maintain alignment 
with international regulations and standards by adopting various amendments, including changes to 
proper shipping names, hazard classes, packing groups, special provisions, packaging 
authorizations, air transport quantity limitations, and vessel stowage requirements. Additionally, 
PHMSA is amending the HMR to allow for better alignment with Transport Canada's Transportation 
of Dangerous Goods Regulations. PHMSA is also withdrawing the unpublished 1 October 2020, Notice 
of Enforcement Policy Regarding International Standards on use of select updated international 
standards in complying with th e HMR during the pendency of this rulemaking.  
DATES:  
Effective date: This rule is effective 25 August 2022.  
Voluntary compliance date: 1 January 2021.  
Delayed compliance date: 26 July 2023.  
Incorporation by reference date: The incorporation by reference of  certain publications listed in this 
rule is approved by the Director of the Federal Register on 25 August 2022. The incorporation by 
reference of certain other publications listed in this rule was approved by the Director of the Federal 
Register as of 11 May 2020.  
This final rule and the notice of proposed rulemaking notified as G/TBT/N/USA/1761  are identified 
by Docket Number PHMSA -2019-0030. The Docket Folder is availab le on Regulations.gov at 
https://www.regulations.gov/docket/PHMSA -2019-0030/document  and provides access to primary 
and supporting documents as well as comments received. Documents are also accessible from 
Regulations.gov  by searching the Docket Number.  
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