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DOT/PHMSA RIN: 2137-AG15 Publication ID: 2026 
Title: Hazardous Materials: Adopt DOT Special Permit 21287 into the HMR 
Abstract:

This rulemaking proposes to adopt a special permit into the hazardous materials regulations to streamline the transportation of small refrigerating machines that contain limited quantities of certain flammable gases, including common household appliances such as refrigerators, window-mounted air-conditioning units, and dehumidifiers.

 
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 
EO 14192 Designation: Deregulatory 
CFR Citation: 49 CFR Part 171    49 CFR Part 173     (To search for a specific CFR, visit the Code of Federal Regulations.)
Legal Authority: 49 U.S.C. sec. 5101 et seq   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  07/01/2025  90 FR 28548   
NPRM Comment Period End  09/02/2025 
Final Rule  07/00/2026 
Additional Information: Docket No. PHMSA-2025-0101 (HM-268M)
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL: www.regulations.gov   Public Comment URL: www.regulations.gov  
RIN Data Printed in the FR: No 
Agency Contact:
Ryan Larson
Transportation Specialist
Department of Transportation
Pipeline and Hazardous Materials Safety Administration
1200 New Jersey Avenue SE,
Washington, DC 20590
Phone:202 366-8553
Email: ryan.larson@dot.gov