Tuesday May 30th, 2023    DEPARTMENT OF TRANSPORTATION 

Pipeline and Hazardous Materials Safety Administration 

49 CFR Parts 171, 172, 173, 175, 176, 178, and 180 

[Docket No. PHMSA–2021–0092 (HM–215Q)] RIN 2137–AF57 

Hazardous Materials: Harmonization With International Standards 

AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), Department of Transportation (DOT). 

ACTION: Notice of proposed rulemaking (NPRM). 

SUMMARY: PHMSA proposes to amend the Hazardous Materials Regulations to maintain alignment with international regulations and standards by adopting various amendments, including changes to proper shipping names, hazard classes, packing groups, special provisions, packaging authorizations, air transport quantity limitations, and vessel stowage requirements. 

DATES: Comments must be received by July 31, 2023. To the extent possible, PHMSA will consider late-filed comments while a final rule is developed. 

Read More:  https://www.govinfo.gov/content/pkg/FR-2023-05-30/pdf/2023-07109.pdf