Committee on Technical Barriers to Trade - Notification - United States - Hazardous materials - Addendum



The following communication, dated 5 March 2024, is being circulated at the request of the delegation of the United States of America.





Title: Hazardous Materials: Adoption of Miscellaneous Petitions and Updating Regulatory Requirements


Reason for Addendum:

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Comment period changed - date:

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Notified measure adopted - date:


Notified measure published - date: 4 March 2024


Notified measure enters into force - date: 3 April 2024


Text of final measure available from[1]:

89 Federal Register (FR) 15636, Title 49 Code of Federal Regulations (CFR) Parts 107, 171, 172, 173, 178, and 180

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Notified measure withdrawn or revoked - date:

Relevant symbol if measure re-notified:

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Content or scope of notified measure changed and text available from1:

New deadline for comments (if applicable):

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Interpretive guidance issued and text available from1:

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Description: PHMSA amends the Hazardous Materials Regulations (HMR) to update, clarify, improve the safety of, or streamline various regulatory requirements. Specifically, this rulemaking responds to 18 petitions for rulemaking submitted by the regulated community between May 2018 and October 2020 that requests PHMSA address a variety of provisions, including but not limited to those addressing packaging, hazard communication, and the incorporation by reference of certain documents. These revisions maintain or enhance the existing high level of safety under the HMR while providing clarity and appropriate regulatory flexibility in the transport of hazardous materials.

Effective date: This final rule is effective on 3 April 2024.

Delayed compliance date: 4 March 2025.

Incorporation by reference date: The incorporation by reference of certain publications listed in this final rule is approved by the Director of the Federal Register as of 3 April 2024.

Title 49 Code of Federal Regulations (CFR) Parts 107, 171, 172, 173, 178, and 180

This final rule and previous actions notified under the symbol G/TBT/N/USA/1970 are identified by docket number PHMSA-2020-0102. The docket folder is available on at, and provides access to primary and supporting documents as well as comments received. Documents are also accessible from by searching the docket number.




[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.