U.S. PHMSA Updates Hazardous Materials Regulations for Transport of Dangerous Goods

On 10 April 2024, the U.S. Pipeline and Hazardous Materials Safety Administration (PHMSA) recently updated the Hazardous Materials Regulations (HMR) to align them with international standards, incorporating changes to shipping names, hazard classes, and packaging requirements.

The final rule incorporates updated versions of international hazardous materials regulations and standards by reference, including the 2023–2024 edition of the “International Civil Aviation Organization Technical Instructions” (ICAO Technical Instructions), Amendment 41-22 of the International Maritime Dangerous Goods Code (IMDG Code), and the 22nd revised edition of the United Nations Recommendations on the Transport of Dangerous Goods – Model Regulations (UN Model Regulations).