The U.S. Department of Transportation (DOT) Pipeline and Hazardous Materials Safety Administration (PHMSA) routinely reviews and amends the Hazardous Materials Regulations (HMR) to harmonize the HMR with international regulations and standards. In February 2019, PHMSA’s Office of Hazardous Materials Safety (OHMS) contracted with the Cambridge Systematics (CS) Team to conduct a risk assessment for the transportation of aerosol containers to align U.S. and international regulations. The study is intended to determine whether the United Nations Recommendations on the Transport of Dangerous Goods — Model Regulations (Model Regulations) definition of aerosols maintains an equivalent level of safety to the definition in the HMR and to assess the risk associated with aligning the definitions. The study is expected to be completed in February 2020, and any rulemaking to align the definition of aerosol containers would be issued after that.
Please see the full memorandum for more information on the PHMSA study and some commentary.
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