Title 49 of the US Code of Federal Regulations (49 CFR) contains all US regulations dealing with Transportation in the United States. The Title is organized into nine volumes, and the regulations it contains are authored by various components of the Departments of Transportation and Homeland Security. Most notably, 49 CFR contains the US Hazardous Material Regulations (HMR) in Parts 100-177.
| Title | Volume | Chapter | Browse Parts | Regulatory Entity |
|---|---|---|---|---|
| Title 49 Transportation | Subtitle A—Office of the Secretary of Transportation | |||
| 1 | 1-99 | Subtitle A—Office of the Secretary of Transportation | ||
| Subtitle B—Other Regulations Relating to Transportation | ||||
| 2 | I | 100-177 | Pipeline and Hazardous Materials Safety Administration, Department of Transportation | |
| 3 | 178-199 | |||
| 4 | II | 200-299 | Federal Railroad Administration, Department of Transportation | |
| 5 | III | 300-399 | Federal Motor Carrier Safety Administration, Department of Transportation | |
| 6 | IV | 400-499 | Coast Guard, Department of Homeland Security | |
| V | 500-571 | National Highway Traffic Safety Administration, Department of Transportation | ||
| 7 | 572-599 | |||
| VI | 600-699 | Federal Transit Administration, Department of Transportation | ||
| VII | 700-799 | National Railroad Passenger Corporation (AMTRAK) | ||
| VIII | 800-999 | National Transportation Safety Board | ||
| 8 | X | 1000-1199 | Surface Transportation Board, Department of Transportation | |
| 9 | 1200-1399 | |||
| XI | [Reserved] | |||
| XII | 1500-1699 | Transportation Security Administration, Department of Homeland Security | ||
This third volume contains regulations authored by the Department of Transportation’s Pipeline and Hazardous Materials Safety Administration dealing with pipeline safety:
Chapter I—Pipeline and Hazardous Materials Safety Administration, Department of Transportation
- Subchapter C—Hazardous Materials Regulations
- Part 178 - Specifications for Packagings
- Part 179 - Specifications for Tank Cars
- Part 180 - Continuing Qualification and Maintenance of Packagings
- Parts 181-185 - [Reserved]
- Subchapter D—Pipeline Safety
- Parts 186-189 - [Reserved]
- Part 190 - Pipeline Safety Programs and Rulemaking Procedures
- Part 191 - Transportation of Natural and Other Gas by Pipeline; Annual Reports, Incident Reports, and Safety-Related Condition Reports
- Part 192 - Transportation of Natural and Other Gas by Pipeline: Minimum Federal Safety Standards
- Part 193 - Liquefied Natural Gas Facilities: Federal Safety Standards
- Part 194 - Response Plans for Onshore Oil Pipelines
- Part 195 - Transportation of Hazardous Liquids by Pipeline
- Parts 196-197 - [Reserved]
- Part 198 - Regulations for Grants to Aid State Pipeline Safety Programs
- Part 199 - Drug and Alcohol Testing