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Pipeline and Hazardous Materials Safety Administration

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Rulemaking Documents

The following DOT Rules 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.

To learn more about DOT Rules, choose a document type, topic, or conduct a title search by keyword. Results will include a summary of the Rule and a link to the PDF of the appropriate Federal Register page. 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
Date Subject Part
09/21/2023 Hazardous Materials: Modernizing Regulations To Improve Safety and Efficiency; Extension of Comment Period 171 172 173 174 175 176 177 178 179 180
09/07/2023 Pipeline Safety: Safety of Gas Distribution Pipelines and Other Pipeline Safety Initiatives 191 192 198
09/01/2023 Hazardous Materials: Suspension of HMR Amendments Authorizing Transportation of Liquefied Natural Gas by Rail 172
08/15/2023 Hazardous Materials: FAST Act Requirements for Real-Time Train Consist Information 171 174 180
08/01/2023 Pipeline Safety: Requirement of Valve Installation and Minimum Rupture Detection Standards: Technical Corrections 192 195
07/05/2023 Hazardous Materials: Modernizing Regulations To Improve Safety and Efficiency 171 172 173 174 175 176 177 178 179 180
06/30/2023 Pipeline Safety: Gas Pipeline Leak Detection and Repair 191 192 193
06/27/2023 Hazardous Materials: FAST Act Requirements for Real-Time Train Consist Information 171 174 180
05/30/2023 Hazardous Materials: Harmonization With International Standards 171 172 173 175 176 178 180
05/18/2023 Pipeline Safety: Gas Pipeline Leak Detection and Repair 191 192 193
04/26/2023 Hazardous Materials: Adoption of Miscellaneous Petitions and Updating Regulatory Requirements 107 171 172 173 178 180
04/24/2023 Pipeline Safety: Safety of Gas Transmission Pipelines: Repair Criteria, Integrity Management Improvements, Cathodic Protection, Management of Change, and Other Related Amendments: Technical Corrections; Response to Petitions for Reconsideration 192
03/03/2023 Hazardous Materials: Adoption of Miscellaneous Petitions and Updating Regulatory Requirements 107 171 172 173 178 180
01/25/2023 Hazardous Materials: Editorial Corrections and Clarifications; Correction 107 110 171 172 173 174 175 176 177 178 180
01/06/2023 Revisions to Civil Penalty Amounts 13 107 171 190
12/27/2022 Hazardous Materials: Editorial Corrections and Clarifications 107 110 171 172 173 174 175 176 177 178 180
12/21/2022 Hazardous Materials: Enhanced Safety Provisions for Lithium Batteries Transported by Aircraft (FAA Reauthorization Act of 2018) 107 171 173
10/25/2022 Pipeline Safety: Safety of Gas Transmission Pipelines: Repair Criteria, Integrity Management Improvements, Cathodic Protection, Management of Change, and Other Related Amendments 192
09/22/2022 Hazardous Materials: Adjusting Registration and Fee Assessment Program 107
09/12/2022 Hazardous Materials: Compatibility With the Regulations of the International Atomic Energy Agency 171 172 173 174 175 176 177
08/29/2022 Pipeline Safety: Periodic Standards Update II 191 192 195
08/24/2022 Pipeline Safety: Safety of Gas Transmission Pipelines: Repair Criteria, Integrity Management Improvements, Cathodic Protection, Management of Change, and Other Related Amendments 192
08/16/2022 Hazardous Materials: Harmonization With International Standards; Correction 173
07/26/2022 Hazardous Materials: Harmonization With International Standards 171 172 173 175 176 178 180
06/13/2022 Pipeline Safety: Safety of Gas Gathering Pipelines: Extension of Reporting Requirements, Regulation of Large, High-Pressure Lines, and Other Related Amendments: Technical Corrections 191
05/11/2022 Administrative Rulemaking-Criminal Referrals 107 190
05/04/2022 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 191 192
04/08/2022 Pipeline Safety: Requirement of Valve Installation and Minimum Rupture Detection Standards 192 195
03/21/2022 Revisions to Civil Penalty Amounts 13 107 171 190
12/27/2021 Pipeline Safety: Unusually Sensitive Areas for the Great Lakes, Coastal Beaches, and Certain Coastal Waters 195
11/15/2021 Pipeline Safety: Safety of Gas Gathering Pipelines: Extension of Reporting Requirements, Regulation of Large, High-Pressure Lines, and Other Related Amendments 191 192
11/08/2021 Hazardous Materials: Suspension of HMR Amendments Authorizing Transportation of Liquefied Natural Gas by Rail 172
08/10/2021 Hazardous Materials: Harmonization With International Standards 171 172 173 175 176 178 180
06/02/2021 Civil Penalty Amounts; Correction 107
05/03/2021 Civil Penalty Amounts 13 107 171 190
04/02/2021 Administrative Rulemaking, Guidance, and Enforcement Procedures 1 106
03/05/2021 Pipeline Safety: Gas Pipeline Regulatory Reform 191 192
03/05/2021 Pipeline Safety: Gas Pipeline Regulatory Reform; Correction 192
01/15/2021 Pipeline Safety: Frequently Asked Questions on the Gas Transmission Rule 191 192
01/15/2021 Pipeline Safety: Periodic Updates of Regulatory References to Technical Standards and Miscellaneous Amendments 191 192 195
01/15/2021 Pipeline Safety: Operator Qualification Frequently Asked Questions 192 195
01/13/2021 Hazardous Materials: Editorial Corrections and Clarifications 106 107 171 172 173 174 175 176 177 178 179 180
01/11/2021 Revisions to Civil Penalty Amounts 13 107 171 190
01/11/2021 Pipeline Safety: Gas Pipeline Regulatory Reform 191 192
12/28/2020 Hazardous Materials: Miscellaneous Amendments Pertaining to DOT-Specification Cylinders 107 171 173 178 180
12/21/2020 Hazardous Materials: Editorial Corrections and Clarifications 106 107 171 172 173 174 175 176 177 178 179 180
12/16/2020 Pipeline Safety: Midstream Facilities Frequently Asked Questions 192 195
12/03/2020 Hazardous Materials: Harmonization With International Standards 171 172 173 174 175 176 178 180
11/25/2020 Hazardous Materials: Adoption of Miscellaneous Petitions To Reduce Regulatory Burdens 107 171 172 173 178 179 180
11/04/2020 Pipeline Safety: Midstream Facilities Frequently Asked Questions 192 195


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