Hazardous Materials: Modernizing Regulations To Facilitate Transportation of Hazardous Materials Using Highly Automated Transportation Systems

Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Transportation Pipeline and Hazardous Materials Safety Administration 49 CFR Parts 171, 172, 173, 174, 175, 176, 177, and 178 [Docket No. PHMSA-2024-0064 (HM-266)] RIN 2137-AF68 AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), U.S. Department of Transportation (DOT). ACTION: Advance notice of proposed rulemaking (ANPRM). SUMMARY: The Pipeline and Hazardous Materials Safety Administration (PHMSA) is publishing this advance notice of proposed rulemaking (ANPRM) to obtain stakeholder input on potential revisions to the Hazardous Materials Regulations (HMR) to facilitate the safe transportation of hazardous materials using highly automated transportation systems. DATES: Comments must be received by March 4, 2026, to ensure consideration. However, PHMSA will consider late-filed comments to the extent possible. ADDRESSES: You may submit comments identified by the docket number PHMSA-2024-0064 (HM-266) by any of the following methods: Federal eRulemaking Portal: https://www.regulations.gov . Follow the online instructions for submitting comments. Fax: 1-202-493-2251. Mail: Docket Management System, U.S. Department of Transportation, Dockets Operations, M-30, Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590. Hand Delivery: U.S. Department of Transportation, Docket Operations, M-30, Ground Floor, Room W12-140 in the West Building, 1200 New Jersey Avenue SE, Washington, DC 20590, between 9:00 a.m. and 5:00 p.m., Monday thr…