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DOT/PHMSA RIN: 2137-AF46 Publication ID: Spring 2022 
Title: Hazardous Materials: Harmonization With International Standards 

The Federal hazardous materials transportation law requires the Secretary of Transportation to ensure that, to the extent practicable, regulations governing the transportation of hazardous materials in commerce are consistent with standards adopted by international authorities (49 U.S.C. 5120(b)). Harmonization enhances safety, facilitates compliance, and improves the efficiency of the global transportation system by minimizing the regulatory burden on the public thus promoting trade. After a thorough review of the provisions recently adopted by various international regulatory bodies, PHMSA has identified areas in the Hazardous Materials Regulations (HMR) in which harmonization with international regulations will provide an enhanced level of safety, an economic benefit, or in many instances both increased safety and economic benefits. As a result, this rulemaking amends the HMR, where appropriate, to maintain alignment with international standards that became effective as of January 1, 2021, and consequently facilitate the safe global trade of hazardous materials. Amendments in this rulemaking include, but are not limited to: New classification and packaging for infectious waste of Category A; Updates to International Organization for Standardization (ISO) cylinder manufacturing and testing standards, and addition of two new entries to the organic peroxides table; Expansion of existing options to transport large robust articles (i.e., refrigerating machines) unpackaged on pallets, in crates, or in appropriate overpacks to include other large robust articles containing gases; and Incorporation by reference of various international standards and regulations, including the latest editions of the UN Model Regulations, the IMDG Code, the ICAO Technical Instructions, and ISO technical standards applicable to cylinders.

Agency: Department of Transportation(DOT)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 49 CFR 171    49 CFR 172    49 CFR 173    49 CFR 175    49 CFR 176    49 CFR 177    49 CFR 178    49 CFR 180   
Legal Authority: 49 U.S.C. 5101 et seq.   
Legal Deadline:  None
Action Date FR Cite
NPRM  08/10/2021  86 FR 43844   
NPRM Comment Period End  10/12/2021 
Final Rule  06/00/2022 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL:   Public Comment URL:  
RIN Data Printed in the FR: No 
Agency Contact:
Steven Andrews
Transportation Regulations Specialist
Department of Transportation
Pipeline and Hazardous Materials Safety Administration
1200 New Jersey Avenue SE,
Washington, DC 20590
Phone:202 366-8553