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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 105

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Date Subject Document Type Part
07/01/2025 Hazardous Materials: Removing Burdensome Rail Reporting Requirements Proposed Rule 171, 174
07/01/2025 Hazardous Materials: Adoption of Department of Transportation Special Permit 14175 Proposed Rule 180
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
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
06/27/2023 Hazardous Materials: FAST Act Requirements for Real-Time Train Consist Information Proposed Rule 171, 174, 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
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
08/10/2021 Hazardous Materials: Harmonization With International Standards Proposed Rule 171, 172, 173, 175, 176, 178, 180
05/03/2021 Civil Penalty Amounts Rule 107, 171, 190
01/11/2021 Revisions to Civil Penalty Amounts Rule 107, 171, 190
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
10/30/2020 Hazardous Materials: Response to an Industry Petition To Reduce Regulatory Burden for Cylinder Requalification Requirements Rule 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
08/06/2019 Hazardous Materials: Response to an Industry Petition To Reduce Regulatory Burden for Cylinder Requalification Requirements Proposed Rule 180
07/31/2019 Revisions to Civil Penalty Amounts Rule 107, 171, 190
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
11/27/2018 Revisions to Civil Penalty Amounts Rule 107, 171, 190
11/07/2018 Hazardous Materials: Response to Petitions From Industry To Modify, Clarify, or Eliminate Regulations Rule 171, 172, 173, 176, 178, 180
09/25/2018 Hazardous Materials: Removal of Electronically Controlled Pneumatic Brake System Requirements for High Hazard Flammable Unit Trains Rule 174, 179
06/18/2018 Hazardous Materials: Miscellaneous Amendments; Response to Appeals; Corrections Rule 172, 173, 180
09/07/2016 Hazardous Materials: Harmonization With International Standards (RRR) Proposed Rule 107, 171, 172, 173, 175, 176, 178, 180
08/15/2016 Hazardous Materials: FAST Act Requirements for Flammable Liquids and Rail Tank Cars Rule 173, 179
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
04/29/2016 Hazardous Materials: Incorporation of ASME Code Section XII and the National Board Inspection Code Proposed Rule 107, 171, 173, 178, 179, 180
01/21/2016 Hazardous Materials: Adoption of Special Permits (MAP-21) (RRR) Rule 107, 171, 172, 173, 174, 176, 177, 178, 180
11/23/2015 Hazardous Materials: Editorial Corrections and Clarifications (RRR) Rule 171, 172, 173, 175, 176, 177, 178, 180
05/08/2015 Hazardous Materials: Enhanced Tank Car Standards and Operational Controls for High-Hazard Flammable Trains Rule 171, 172, 173, 174, 179
01/30/2015 Hazardous Materials: Adoption of Special Permits (MAP-21) (RRR) Proposed Rule 171, 172, 173, 174, 176, 177, 178, 180
01/23/2015 Hazardous Materials: Miscellaneous Amendments (RRR) Proposed Rule 107, 171, 172, 173, 175, 176, 177, 178, 179, 180
01/08/2015 Hazardous Materials: Harmonization With International Standards (RRR) Rule 171, 172, 173, 175, 176, 178, 180
08/25/2014 Hazardous Materials: Harmonization With International Standards (RRR) Proposed Rule 171, 172, 173, 175, 176, 178, 180
08/01/2014 Hazardous Materials: Enhanced Tank Car Standards and Operational Controls for High-Hazard Flammable Trains Proposed Rule 171, 172, 173, 174, 179
07/11/2014 Hazardous Materials: Compatibility With the Regulations of the International Atomic Energy Agency (RRR) Rule 171, 172, 173, 174, 175, 176, 177, 178
03/11/2013 Hazardous Materials; Miscellaneous Amendments (RRR) Rule 105, 171, 172, 173, 177, 178, 180
10/05/2012 Hazardous Materials: Minor Editorial Corrections and Clarifications (RRR) Rule 107, 171, 172, 173, 175, 178, 179
06/25/2012 Hazardous Materials: Incorporating Rail Special Permits Into the Hazardous Materials Regulations Rule 171, 172, 173, 174, 179, 180
04/26/2012 Hazardous Materials; Miscellaneous Amendments (RRR) Proposed Rule 105, 171, 172, 173, 177, 178, 180