USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Notices and Rulemaking Documents

The following PHMSA rules and notices are linked to the Federal Register website. The Federal Register is the Federal Government’s official daily publication of rules, proposed rules, and notices of federal agencies, and provides a forum for public participation in the democratic process. You may filter between Rules and Notices using the Document Type dropdown. The Topic dropdown will provide you rules associated with that topic while the Subject dropdown will provide you Notices and Rules that mention that subject.

The Federal Register provides notices dating back to 1995. If you need to see notices prior to 1995, please contact:

Office of Hazardous Materials Safety: 202-366-4488
Office of Pipeline Safety: 202-366-4595

The Federal Register provides rulemaking documents dating back to 1995. If you need to see rules prior to 1995, please visit our rulemakings archives:

Hazardous Materials Safety Rulemaking Archive
Pipeline Safety Rulemaking Archive

Displaying 1 - 50 of 223

Hold Ctrl and click for multi-selection
Date Subject Document Type Part
02/10/2026 Hazardous Materials: Harmonization With International Standards Proposed Rule 171, 172, 173, 175, 176, 178, 180
01/14/2026 Hazardous Materials: Eliminating Unnecessary Regulatory Burdens on Fuel Transportation Rule 107, 171, 172, 173, 178, 180
07/01/2025 Hazardous Materials: Reducing Burdens on Domestic Aerosol Shippers Proposed Rule 171
07/01/2025 Hazardous Materials: Remove Redundant List of U.S. EPA CERCLA Hazardous Substances Proposed Rule 171, 172, 173
07/01/2025 Hazardous Materials: Removing Burdensome Rail Reporting Requirements Proposed Rule 171, 174
07/01/2025 Hazardous Materials: Reducing Undue Paperwork Burdens to Domestic Carriers Proposed Rule 172
07/01/2025 Hazardous Materials: Reducing Costs to Domestic Shippers and Carriers of Limited Quantities Proposed Rule 172, 173
07/01/2025 Hazardous Materials: Allowing Fireworks Certification Agencies (FCAs) To Approve Professional Fireworks Proposed Rule 107, 171, 172, 173
07/01/2025 Hazardous Materials: Adoption of Department of Transportation Special Permit 21287 Proposed Rule 171, 173
07/01/2025 Hazardous Materials: Adoption of Department of Transportation Special Permit 21379 Proposed Rule 171, 173
07/01/2025 Hazardous Materials: Reduce Training Burdens for America's Farmers Proposed Rule 172
07/01/2025 Hazardous Materials: Adoption of Department of Transportation Special Permit 21478 Proposed Rule 172, 173
06/23/2025 Hazardous Materials: Liquefied Natural Gas by Rail Rule 172, 173, 174, 179, 180
12/30/2024 Revisions to Civil Penalty Amounts, 2025 Rule 107, 171, 190
10/28/2024 Hazardous Materials: Advancing Safety of Highway, Rail, and Vessel Transportation Proposed Rule 107, 171, 172, 173, 174, 176, 177, 178, 179, 180
06/24/2024 Hazardous Materials: FAST Act Requirements for Real-Time Train Consist Information Rule 171, 174, 180
04/10/2024 Hazardous Materials: Harmonization With International Standards Rule 171, 172, 173, 175, 176, 178, 180
03/04/2024 Hazardous Materials: Adoption of Miscellaneous Petitions and Updating Regulatory Requirements Rule 107, 171, 172, 173, 178, 180
12/28/2023 Revisions to Civil Penalty Amounts, 2024 Rule 107, 171, 190
11/30/2023 Hazardous Materials: Streamlining Requirements for the Approval of Certain Energetic Materials Proposed Rule 107, 171, 173
09/01/2023 Hazardous Materials: Suspension of HMR Amendments Authorizing Transportation of Liquefied Natural Gas by Rail Rule 172
06/27/2023 Hazardous Materials: FAST Act Requirements for Real-Time Train Consist Information Proposed Rule 171, 174, 180
05/30/2023 Hazardous Materials: Harmonization With International Standards Proposed Rule 171, 172, 173, 175, 176, 178, 180
03/03/2023 Hazardous Materials: Adoption of Miscellaneous Petitions and Updating Regulatory Requirements Proposed Rule 107, 171, 172, 173, 178, 180
01/06/2023 Revisions to Civil Penalty Amounts Rule 107, 171, 190
12/21/2022 Hazardous Materials: Enhanced Safety Provisions for Lithium Batteries Transported by Aircraft (FAA Reauthorization Act of 2018) Rule 107, 171, 173
09/12/2022 Hazardous Materials: Compatibility With the Regulations of the International Atomic Energy Agency Proposed Rule 171, 172, 173, 174, 175, 176, 177
07/26/2022 Hazardous Materials: Harmonization With International Standards Rule 171, 172, 173, 175, 176, 178, 180
03/21/2022 Revisions to Civil Penalty Amounts Rule 107, 171, 190
11/08/2021 Hazardous Materials: Suspension of HMR Amendments Authorizing Transportation of Liquefied Natural Gas by Rail Proposed Rule 172
08/10/2021 Hazardous Materials: Harmonization With International Standards Proposed Rule 171, 172, 173, 175, 176, 178, 180
12/28/2020 Hazardous Materials: Miscellaneous Amendments Pertaining to DOT-Specification Cylinders Rule 107, 171, 173, 178, 180
12/21/2020 Hazardous Materials: Editorial Corrections and Clarifications Rule 106, 107, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180
11/25/2020 Hazardous Materials: Adoption of Miscellaneous Petitions To Reduce Regulatory Burdens Rule 107, 171, 172, 173, 178, 179, 180
07/24/2020 Hazardous Materials: Liquefied Natural Gas by Rail Rule 172, 173, 174, 179, 180
05/11/2020 Hazardous Materials: Harmonization With International Standards Rule 171, 172, 173, 174, 175, 176, 178, 180
08/14/2019 Hazardous Materials: Adoption of Miscellaneous Petitions To Reduce Regulatory Burdens Proposed Rule 107, 171, 172, 173, 178, 179, 180
03/06/2019 Hazardous Materials: Enhanced Safety Provisions for Lithium Batteries Transported by Aircraft (FAA Reauthorization Act of 2018) Rule 172, 173
02/28/2019 Hazardous Materials: Oil Spill Response Plans and Information Sharing for High-Hazard Flammable Trains (FAST Act) Rule 107, 130, 171, 173, 174
11/27/2018 Hazardous Materials: Harmonization With International Standards Proposed Rule 171, 172, 173, 175, 176, 178, 180
11/07/2018 Hazardous Materials: Response to Petitions From Industry To Modify, Clarify, or Eliminate Regulations Rule 171, 172, 173, 176, 178, 180
10/18/2018 Hazardous Materials: Notification of the Pilot-in-Command and Response to Air Related Petitions for Rulemaking Rule 172, 175
06/18/2018 Hazardous Materials: Miscellaneous Amendments; Response to Appeals; Corrections Rule 172, 173, 180
03/30/2017 Hazardous Materials: Harmonization With International Standards (RRR) Rule 107, 171, 172, 173, 175, 176, 178, 180
12/05/2016 Hazardous Materials: Notification of the Pilot-in-Command and Response to Air Related Petitions for Rulemaking (RRR) Proposed Rule 172, 175
09/07/2016 Hazardous Materials: Harmonization With International Standards (RRR) Proposed Rule 107, 171, 172, 173, 175, 176, 178, 180
07/29/2016 Hazardous Materials: Oil Spill Response Plans and Information Sharing for High-Hazard Flammable Trains Proposed Rule 130, 171, 173, 174
07/26/2016 Hazardous Materials: Miscellaneous Amendments Pertaining to DOT-Specification Cylinders (RRR) Proposed Rule 107, 171, 172, 173, 178, 180
06/30/2016 Hazardous Materials: Miscellaneous Petitions for Rulemaking (RRR) Proposed Rule 171, 172, 173, 176, 178, 180
06/02/2016 Hazardous Materials: Miscellaneous Amendments (RRR) Rule 107, 171, 172, 173, 175, 176, 177, 178, 179, 180