2137-AG16 202504 Unified Agenda of Federal Regulatory and Deregulatory Actions 2137 Pipeline and Hazardous Materials Safety Administration PHMSA 2100 Department of Transportation DOT Hazardous Materials: Adopt DOT Special Permit 21379 into the HMR

This rulemaking proposes to adopt the provisions of DOT special permit (SP) 21379 into the hazardous materials regulations to streamline the transportation of large refrigerating machines filled with flammable gases.

]]> Substantive, Nonsignificant First Time Published in The Unified Agenda Proposed Rule Stage No No Deregulatory 49 CFR Part 171 49 CFR Part 173 49 U.S.C. sec. 5101 et seq. No NPRM 07/01/2025 90 FR 28552 NPRM Comment Period End 09/02/2025 Docket No. PHMSA-2025-0102 (HM-268N) No No None No No www.regulations.gov www.regulations.gov No No Ryan Larson Transportation Specialist 2137 Pipeline and Hazardous Materials Safety Administration PHMSA 202 366-8553 ryan.larson@dot.gov 1200 New Jersey Avenue SE, Washington DC 20590