| 6/27/2023 | Hazardous Materials: FAST Act Requirements for Real-Time Train Consist Information | NPRM | Significant | https://www.regulations.gov/document/PHMSA-2016-0015-0015 |
| 5/30/2023 | Hazardous Materials: Harmonization With International Standards | NPRM | Significant | https://www.regulations.gov/document/PHMSA-2021-0092-0002 |
| 5/18/2023 | Pipeline Safety: Gas Pipeline Leak Detection and Repair | NPRM | Significant | https://www.regulations.gov/document/PHMSA-2021-0039-0019 |
| 4/26/2023 | Hazardous Materials: Adoption of Miscellaneous Petitions and Updating Regulatory Requirements | NPRM | Significant | https://www.regulations.gov/document/PHMSA-2020-0102-0002 |
| 1/25/2023 | Hazardous Materials: Editorial Corrections and Clarifications; Correction | Final Rule | Not Significant | See EO 12866 section of final rule. |
| 1/6/2023 | Revisions to Civil Penalty Amounts | Final Rule | Not Significant | See EO 12866 section of final rule. |
| 12/27/2022 | Hazardous Materials: Editorial Corrections and Clarifications | Final Rule | Not Significant | See EO 12866 section of final rule. |
| 12/21/2022 | Hazardous Materials: Enhanced Safety Provisions for Lithium Batteries Transported by Aircraft (FAA Reauthorization Act of 2018) | Final Rule | Not Significant | Regulations.gov |
| 10/25/2022 | Pipeline Safety: Safety of Gas Transmission Pipelines: Repair Criteria, Integrity Management Improvements, Cathodic Protection, Management of Change, and Other Related Amendments | Final Rule | Not Significant | NA (Correction in rule) |
| 9/22/2022 | Hazardous Materials: Adjusting Registration and Fee Assessment Program | NPRM | Non Significant | NA (Advanced Notices of Proposed Rulemaking are not accompanied by RIA) |
| 9/12/2022 | Hazardous Materials: Compatibility With the Regulations of the International Atomic Energy Agency | NPRM | | Regulations.gov |
| 8/29/2022 | Pipeline Safety: Periodic Standards Update II | NPRM | Non Significant | See EO 12866 section of proposed rule. |
| 8/24/2022 | Pipeline Safety: Safety of Gas Transmission Pipelines: Repair Criteria, Integrity Management Improvements, Cathodic Protection, Management of Change, and Other Related Amendments | Final Rule | Significant | Regulations.gov |
| 8/16/2022 | Hazardous Materials: Harmonization With International Standards; Correction | Final Rule | Not Significant | See EO 12866 section of final rule |
| 7/26/2022 | Hazardous Materials: Harmonization With International Standards | Final Rule | Not Significant | Regulations.gov |
| 6/13/2022 | Pipeline Safety: Safety of Gas Gathering Pipelines: Extension of Reporting Requirements, Regulation of Large, High-Pressure Lines, and Other Related Amendments: Technical Corrections | Final Rule | Not Significant | See EO 12866 section of final rule |
| 5/11/2022 | Administrative Rulemaking-Criminal Referrals | Final Rule | Not Significant | See EO 12866 section of final rule |
| 5/4/2022 | Pipeline Safety: Safety of Gas Gathering Pipelines: Extension of Reporting Requirements, Regulation of Large, High-Pressure Lines, and Other Related Amendments: Response to a Petition for Reconsideration; Technical Corrections; Issuance of Limited Enforcement Discretion | Final Rule | Not Significant | See EO 12866 section of final rule |
| 4/8/2022 | Pipeline Safety: Requirement of Valve Installation and Minimum Rupture Detection Standards | Final Rule | Significant | Regulations.gov |
| 3/21/2022 | Revisions to Civil Penalty Amounts | Final Rule | Not Significant | See EO 12866 section of final rule |
| 12/27/2021 | Pipeline Safety: Unusually Sensitive Areas for the Great Lakes, Coastal Beaches, and Certain Coastal Waters | Final Rule | Significant | Regulations.gov |
| 11/15/2021 | Pipeline Safety: Safety of Gas Gathering Pipelines: Extension of Reporting Requirements, Regulation of Large, High-Pressure Lines, and Other Related Amendments | Final Rule | Significant | Regulations.gov |
| 11/8/2021 | Hazardous Materials: Suspension of HMR Amendments Authorizing Transportation of Liquefied Natural Gas by Rail | NPRM | Significant | See EO 12866 section of proposed rule. |
| 6/2/2021 | Civil Penalty Amounts; Correction | Final Rule | Not Significant | NA (Correction in rule) |
| 5/3/2021 | Civil Penalty Amounts | Final Rule | Not Significant | See EO 12866 section of final rule |
| 4/2/2021 | Administrative Rulemaking, Guidance, and Enforcement Procedures | Final Rule | Not Significant | See EO 12866 section of final rule |
| 3/5/2021 | Pipeline Safety: Gas Pipeline Regulatory Reform; Correction | Final Rule | Not Significant | NA (Correction in Rule) |
| 1/15/2021 | Pipeline Safety: Periodic Updates of Regulatory References to Technical Standards and Miscellaneous Amendments | NPRM | Non Significant | See EO 12866 section of proposed rule. |
| 1/13/2021 | Hazardous Materials: Editorial Corrections and Clarifications | Final Rule | Not Significant | NA (Correction in rule) |
| 1/11/2021 | Pipeline Safety: Gas Pipeline Regulatory Reform | Final Rule | Significant | Regulations.gov |
| 1/11/2021 | Revisions to Civil Penalty Amounts | Final Rule | Not Significant | See EO 12866 section of final rule. |
| 12/28/2020 | Hazardous Materials: Miscellaneous Amendments Pertaining to DOT-Specification Cylinders | Final Rule | Nonsignificant | Regulations.gov |
| 12/21/2020 | Hazardous Materials: Editorial Corrections and Clarifications | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 12/3/2020 | Hazardous Materials: Harmonization With International Standards | Final Rule | Nonsignificant | NA (Correction in rule) |
| 11/25/2020 | Hazardous Materials: Adoption of Miscellaneous Petitions To Reduce Regulatory Burdens | Final Rule | Nonsignificant | Regulations.gov |
| 10/30/2020 | Hazardous Materials: Response to an Industry Petition To Reduce Regulatory Burden for Cylinder Requalification Requirements | Final Rule | Nonsignificant | Regulations.gov |
| 10/14/2020 | Pipeline Safety: Class Location Change Requirements | NPRM | Significant | https://www.regulations.gov/document/PHMSA-2017-0151-0042 |
| 7/24/2020 | Hazardous Materials: Liquefied Natural Gas by Rail | Final Rule | Significant | Regulations.gov |
| 7/23/2020 | Pipeline Safety: Safety of Underground Natural Gas Storage Facilities; Correction | Final Rule | Nonsignificant | NA (Correction in rule) |
| 7/6/2020 | Pipeline Safety: Safety of Gas Transmission Pipelines: MAOP Reconfirmation, Expansion of Assessment Requirements, and Other Related Amendments: Response to a Joint Petition for Reconsideration | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 5/11/2020 | Hazardous Materials: Harmonization With International Standards | Final Rule | Nonsignificant | Regulations.gov |
| 4/16/2020 | Pipeline Safety: Regulatory Reform for Hazardous Liquid Pipelines | NPRM | Significant | https://www.regulations.gov/document/PHMSA-2018-0047-0002 |
| 2/12/2020 | Pipeline Safety: Safety of Underground Natural Gas Storage Facilities | Final Rule | Significant | https://www.regulations.gov/document/PHMSA-2016-0016-0163 |
| 10/29/2019 | Revisions to Civil Penalty Amounts | Final Rule | Nonsignificant | NA (Correction in rule) |
| 10/1/2019 | Pipeline Safety: Enhanced Emergency Order Procedures | Final Rule | Significant | See EO 12866 section of final rule. |
| 10/1/2019 | Pipeline Safety: Safety of Gas Transmission Pipelines: MAOP Reconfirmation, Expansion of Assessment Requirements, and Other Related Amendments | Final Rule | Significant | Regulations.gov |
| 10/1/2019 | Pipeline Safety: Safety of Hazardous Liquid Pipelines | Final Rule | Significant | Regulations.gov |
| 7/31/2019 | Revisions to Civil Penalty Amounts | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 4/23/2019 | Conforming Amendments and Technical Corrections to Department Rules Implementing the Transportation Industry Drug Testing Program | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 3/6/2019 | Hazardous Materials: Enhanced Safety Provisions for Lithium Batteries Transported by Aircraft (FAA Reauthorization Act of 2018) | Final Rule | Significant | Regulations.gov |
| 2/28/2019 | Hazardous Materials: Oil Spill Response Plans and Information Sharing for High-Hazard Flammable Trains (FAST Act) | Final Rule | Significant | Regulations.gov |
| 2/14/2019 | Hazardous Materials: Revisions to Hazardous Materials Grants Requirements (FAST Act) | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 11/27/2018 | Revisions to Civil Penalty Amounts | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 11/20/2018 | Pipeline Safety: Plastic Pipe Rule | Final Rule | Significant | Regulations.gov |
| 11/7/2018 | Hazardous Materials: Response to Petitions From Industry To Modify, Clarify, or Eliminate Regulations | Final Rule | Nonsignificant | Regulations.gov |
| 10/31/2018 | Hazardous Materials: Notification of the Pilot-in-Command and Response to Air Related Petitions for Rulemaking | Final Rule | Nonsignificant | NA (Correction in rule) |
| 10/18/2018 | Hazardous Materials: Notification of the Pilot-in-Command and Response to Air Related Petitions for Rulemaking | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 9/25/2018 | Hazardous Materials: Removal of Electronically Controlled Pneumatic Brake System Requirements for High Hazard Flammable Unit Trains | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 6/18/2018 | Hazardous Materials: Miscellaneous Amendments; Response to Appeals; Corrections | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 2/5/2018 | Hazardous Materials: General Information, Regulations, and Definitions | Final Rule | Nonsignificant | NA (Correction in rule) |
| 10/16/2017 | Hazardous Materials: Enhanced Tank Car Standards and Operational Controls for High-Hazard Flammable Trains | Final Rule | Nonsignificant | Regulations.gov |
| 4/27/2017 | Pipeline Safety: Inflation Adjustment of Maximum Civil Penalties | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 4/19/2017 | Hazardous Materials: Revision of Maximum and Minimum Civil Penalties | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 3/30/2017 | Hazardous Materials: Harmonization With International Standards (RRR) | Final Rule | Nonsignificant | Regulations.gov |
| 1/23/2017 | Pipeline Safety: Operator Qualification, Cost Recovery, Accident and Incident Notification, and Other Pipeline Safety Changes | Final Rule | Nonsignificant | Regulations.gov |
| 12/19/2016 | Pipeline Safety: Safety of Underground Natural Gas Storage Facilities | Final Rule | Significant | Regulations.gov |
| 10/21/2016 | Pipeline Safety: Expanding the Use of Excess Flow Valves in Gas Distribution Systems to Applications Other Than Single-Family Residences | Final Rule | Nonsignificant | Regulations.gov |
| 10/14/2016 | Pipeline Safety: Enhanced Emergency Order Procedures | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 10/14/2016 | Pipeline Safety: Expanding the Use of Excess Flow Valves in Gas Distribution Systems to Applications Other Than Single-Family Residences | Final Rule | Nonsignificant | Regulations.gov |
| 8/15/2016 | Hazardous Materials: FAST Act Requirements for Flammable Liquids and Rail Tank Cars | Final Rule | Significant | See EO 12866 section of final rule. |
| 6/30/2016 | Pipeline Safety: Inflation Adjustment of Maximum Civil Penalties | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 6/29/2016 | Hazardous Materials: Revision of Maximum and Minimum Civil Penalties | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 6/2/2016 | Hazardous Materials: Miscellaneous Amendments (RRR) | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 5/27/2016 | Hazardous Materials Table, Special Provisions, Hazardous Materials Communications, Emergency Response Information, Training Requirements, and Security Plans | Final Rule | Nonsignificant | NA (Correction in rule) |
| 5/19/2016 | Hazardous Materials: Carriage of Battery-Powered Electronic Smoking Devices in Passenger Baggage | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 5/16/2016 | Hazardous Materials: Incorporation by Reference Edition Update for the American Society of Mechanical Engineers Boiler and Pressure Vessel Code and Transportation Systems for Liquids and Slurries: Pressure Piping Code | Final Rule | Nonsignificant | NA (Correction in rule) |
| 4/29/2016 | Hazardous Materials: Incorporation by Reference Edition Update for the American Society of Mechanical Engineers Boiler and Pressure Vessel Code and Transportation Systems for Liquids and Slurries: Pressure Piping Code | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 4/25/2016 | Hazardous Materials Table, Special Provisions, Hazardous Materials Communications, Emergency Response Information, Training Requirements, and Security Plans | Final Rule | Nonsignificant | NA (Correction in rule) |
| 3/31/2016 | Hazardous Materials: Reverse Logistics (RRR) | Final Rule | Nonsignificant | Regulations.gov |
| 1/21/2016 | Hazardous Materials: Adoption of Special Permits (MAP-21) (RRR) | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 12/21/2015 | Hazardous Materials: Requirements for the Safe Transportation of Bulk Explosives (RRR) | Final Rule | Nonsignificant | Regulations.gov |
| 11/23/2015 | Hazardous Materials: Editorial Corrections and Clarifications (RRR) | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 10/30/2015 | Hazardous Materials: Carriage of Battery-Powered Electronic Smoking Devices in Passenger Baggage | Final Rule | Emergency | See EO 12866 section of final rule. |
| 9/30/2015 | Pipeline Safety: Miscellaneous Changes to Pipeline Safety Regulations: Response to Petitions for Reconsideration | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 9/10/2015 | Hazardous Materials: Special Permit and Approvals Standard Operating Procedures and Evaluation Process | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 8/6/2015 | Pipeline Safety: Periodic Updates of Regulatory References to Technical Standards and Miscellaneous Amendments; Corrections | Final Rule | Nonsignificant | NA (Correction in rule) |
| 7/23/2015 | Pipeline Safety: Pipeline Damage Prevention Programs | Final Rule | Nonsignificant | Regulations.gov |
| 5/8/2015 | Hazardous Materials: Enhanced Tank Car Standards and Operational Controls for High-Hazard Flammable Trains | Final Rule | Significant | Regulations.gov |
| 3/30/2015 | Hazardous Materials: Spare Fuel Cell Cartridges Containing Flammable Gas Transported by Aircraft in Passenger and Crew Member Checked Baggage | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 3/11/2015 | Pipeline Safety: Miscellaneous Changes to Pipeline Safety Regulations | Final Rule | Nonsignificant | Regulations.gov |
| 2/20/2015 | Hazardous Materials: Transportation of Lithium Batteries | Final Rule | Nonsignificant | NA (Extension of compliance date) |
| 1/8/2015 | Hazardous Materials: Harmonization With International Standards (RRR) | Final Rule | Nonsignificant | Regulations.gov |
| 1/5/2015 | Pipeline Safety: Periodic Updates of Regulatory References to Technical Standards and Miscellaneous Amendments | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 1/5/2015 | Pipeline Safety: Periodic Updates of Regulatory References to Technical Standards and Miscellaneous Amendments | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 8/7/2014 | Hazardous Materials: Failure To Pay Civil Penalties | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 8/6/2014 | Hazardous Materials: Transportation of Lithium Batteries | Final Rule | Significant | Regulations.gov |
| 7/25/2014 | Hazardous Materials: Shippers-General Requirements for Shipments and Packagings | Final Rule | Nonsignificant | NA (Correction in rule) |
| 7/11/2014 | Hazardous Materials: Compatibility With the Regulations of the International Atomic Energy Agency (RRR) | Final Rule | Nonsignificant | Regulations.gov |
| 3/18/2014 | Hazardous Materials: Adoption of Certain Special Permits and Competent Authorities Into Regulations | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 11/19/2013 | Hazardous Materials Table, Special Provisions, Hazardous Materials Communications, Emergency Response Information, Training Requirements, and Security Plans | Final Rule | Nonsignificant | NA (Correction in rule) |
| 10/31/2013 | Hazardous Materials: Corrections and Response to Administrative Appeals (HM-215K, HM-215L, HM-218G and HM-219) | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 10/2/2013 | Hazardous Materials: Enhanced Enforcement Procedures-Resumption of Transportation | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 10/2/2013 | Hazardous Materials: Minor Editorial Corrections and Clarifications (RRR) | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 10/2/2013 | Hazardous Materials Regulations: Penalty Guidelines | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 9/25/2013 | Pipeline Safety: Administrative Procedures; Updates and Technical Corrections | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 9/25/2013 | Hazardous Materials: Highway-Rail Grade Crossing; Safe Clearance | Final Rule | Nonsignificant | Regulations.gov |
| 7/31/2013 | Pipeline Safety: Transportation of Hazardous Liquids by Pipeline | Final Rule | Nonsignificant | NA (Correction in rule) |
| 7/30/2013 | Hazardous Materials: Approval and Communication Requirements for the Safe Transportation of Air Bag Inflators, Air Bag Modules, and Seat-Belt Pretensioners (RRR) | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 7/25/2013 | Hazardous Materials: Specifications for Packagings | Final Rule | Nonsignificant | NA (Correction in rule) |
| 7/16/2013 | Hazardous Materials: Revision to Fireworks Regulations (RRR) | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 4/19/2013 | Hazardous Materials; Temporary Reduction of Registration Fees | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 4/17/2013 | Hazardous Materials: Revision of Maximum and Minimum Civil Penalties | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 3/25/2013 | Hazardous Materials: Miscellaneous Petitions for Rulemaking (RRR) | Final Rule | Nonsignificant | NA (Correction in rule) |
| 3/11/2013 | Hazardous Materials; Miscellaneous Amendments (RRR) | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 3/7/2013 | Hazardous Materials: Miscellaneous Petitions for Rulemaking (RRR) | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 2/6/2013 | Hazardous Materials: Harmonization with International Standards (RRR) | Final Rule | | NA (Correction in rule) |
| 1/7/2013 | Hazardous Materials: Harmonization with International Standards (RRR) | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 10/5/2012 | Hazardous Materials: Minor Editorial Corrections and Clarifications (RRR) | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 10/2/2012 | Hazardous Materials: Shippers-General Requirements for Shipments and Packagings | Final Rule | Nonsignificant | NA (Correction in rule) |
| 6/25/2012 | Hazardous Materials: Incorporating Rail Special Permits Into the Hazardous Materials Regulations | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 4/16/2012 | Hazardous Materials; Packages Intended for Transport by Aircraft | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 12/30/2011 | Hazardous Materials: Harmonization With the United Nations Recommendations on the Transport of Dangerous Goods: Model Regulations, International Maritime Dangerous Goods Code, and the International Civil Aviation Organization Technical Instructions for the Safe Transport of Dangerous Goods by Air | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 12/28/2011 | Hazardous Materials: Miscellaneous Amendments; Response to Appeals; Corrections | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 12/2/2011 | Hazardous Materials: Drivers of CMVs: Restricting the Use of Cellular Phones | Final Rule | Significant | Regulations.gov |
| 9/13/2011 | Hazardous Materials: Minor Editorial Corrections and Clarifications | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 7/26/2011 | Hazardous Materials Transportation: Revisions of Special Permits Procedures; Response to Appeals; Corrections | Final Rule | Nonsignificant | See EO 12866 section of final rule. |
| 7/21/2011 | Pipeline Safety: Applying Safety Regulations to All Rural Onshore Hazardous Liquid Low-Stress Lines, Correction | Final Rule | Nonsignificant | NA (Correction in rule) |
| 7/20/2011 | Hazardous Materials; Miscellaneous Amendments | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 6/29/2011 | Hazardous Materials: Clarification of the Fireworks Approvals Policy | Final Rule | Nonsignificant | See Economic and Transportation Effects section of rule |
| 6/27/2011 | Hazardous Materials: Revision to the List of Hazardous Substances and Reportable Quantities | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 6/16/2011 | Pipeline Safety: Control Room Management/Human Factors | Final Rule | Significant | See EO 12866 section of final rule |
| 6/7/2011 | Hazardous Materials: Requirements for Storage of Explosives During Transportation | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 5/26/2011 | Hazardous Materials: Specifications for Packagings | Final Rule | Nonsignificant | NA (Correction in rule) |
| 5/5/2011 | Pipeline Safety: Applying Safety Regulations to All Rural Onshore Hazardous Liquid Low-Stress Lines | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 3/2/2011 | Hazardous Materials: Enhanced Enforcement Authority Procedures | Final Rule | Significant | See EO 12866 section of final rule |
| 2/28/2011 | Hazardous Materials: Limiting the Use of Electronic Devices by Highway | Final Rule | Significant | See EO 12866 section of final rule |
| 2/1/2011 | Hazardous Materials: Incorporation of Certain Cargo Tank Special Permits Into Regulations | Final Rule | Significant | See EO 12866 section of final rule |
| 2/1/2011 | Pipeline Safety: Mechanical Fitting Failure Reporting Requirements | Final Rule | Nonsignificant | See EO 12866 section of final rule |
| 1/19/2011 | Hazardous Materials: Harmonization With the United Nations Recommendations, International Maritime Dangerous Goods Code, and the International Civil Aviation Organization Technical Instructions for the Safe Transport of Dangerous Goods by Air | Final Rule | Nonsignificant | Regulations.gov |
| 1/5/2011 | Hazardous Materials Transportation: Revisions of Special Permits Procedures | Final Rule | Nonsignificant | See EO 12866 section of final rule |
