As the federal government awaits reopening, agencies like the U.S. DOT’s Pipeline and Hazardous Materials Safety Administration (PHMSA) will face a busy regulatory agenda. PHMSA has nearly 20 hazmat rulemakings from July 2025 awaiting final action—many of which could significantly impact hazmat shippers nationwide.
Streamlining the HMR
PHMSA’s latest Unified Agenda outlines plans to clarify and modernize the Hazardous Materials Regulations (HMR)—introducing new reliefs, aligning with international standards, and simplifying compliance.
Proposed Reliefs
- Limited Quantity Markings (2137-AG03): Allows smaller markings (25mm x 25mm) on select packages.
- Aerosols (2137-AG04): Expands the definition to include pure gases, aligning 49 CFR 171.8 with global standards.
- Lithium Batteries (2137-AG05): Increases the amounts allowed as materials of trade under 49 CFR 173.6.
Special Permit Improvements
- PHMSA aims to make hazmat special permits—which authorize safe alternatives to standard rules—more efficient. Key updates include:
- 2137-AG08: Permits continued use of special-permit packaging while it remains safe.
- 2137-AG09: Lets shippers renew special permits at any time before expiration.
- 2137-AG14 to AG18: Incorporates reliefs from long-standing special permits covering drum unloading, IBC use, and transport of appliances like refrigerators and air conditioners.
Withdrawn: Registration Fee Increases
PHMSA will withdraw its proposal (2137-AF59) to raise hazmat registration fees.
- While the agency acknowledges a funding gap for the Hazardous Materials Emergency Preparedness (HMEP) grants, it plans to explore alternative funding mechanisms.
- Provisions for electronic payments and digital registration certificates will continue as separate rulemakings.