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 fourth volume contains regulations authored by the Department of Transportation’s Federal Railroad Administration:
Chapter II—Federal Railroad Administration, Department of Transportation
- Part 200 - Informal Rules of Practice for Passenger Service
- Part 201 - [Reserved]
- Part 207 - Railroad Police Officers
- Part 209 - Railroad Safety Enforcement Procedures
- Part 210 - Railroad Noise Emission Compliance Regulations
- Part 211 - Rules of Practice
- Part 212 - State Safety Participation Regulations
- Part 213 - Track Safety Standards
- Part 214 - Railroad Workplace Safety
- Part 215 - Railroad Freight Car Safety Standards
- Part 216 - Special Notice and Emergency Order Procedures: Railroad Track, Locomotive and Equipment
- Part 217 - Railroad Operating Rules
- Part 218 - Railroad Operating Practices
- Part 219 - Control of Alcohol and Drug Use
- Part 220 - Railroad Communications
- Part 221 - Rear End Marking Device: Passenger, Commuter and Freight Trains
- Part 222 - Use of Locomotive Horns at Public Highway-Rail Grade Crossings
- Part 223 - Safety Glazing Standards: Locomotives, Passenger Cars and Cabooses
- Part 224 - Reflectorization of Rail Freight Rolling Stock
- Part 225 - Railroad Accidents/Incidents: Reports Classification, and Investigations
- Part 227 - Occupational Noise Exposure
- Part 228 - Hours of Service of Railroad Employees; Recordkeeping and Reporting; Sleeping Quarters
- Part 229 - Railroad Locomotive Safety Standards
- Part 230 - Steam Locomotive Inspection and Maintenance Standards
- Part 231 - Railroad Safety Appliance Standards
- Part 232 - Brake System Safety Standards for Freight and Other Non-Passenger Trains and Equipment; End-Of-Train Devices
- Part 233 - Signal Systems Reporting Requirements
- Part 234 - Grade Crossing Signal System Safety and State Action Plans
- Part 235 - Instructions Governing Applications for Approval of a Discontinuance or Material Modification of a Signal System or Relief from the Requirements of Part 236
- Part 236 - Rules, Standards, and Instructions Governing the Installation, Inspection, Maintenance, and Repair of Signal and Train Control Systems, Devices, and Appliances
- Part 237 - Bridge Safety Standards
- Part 238 - Passenger Equipment Safety Standards
- Part 239 - Passenger Train Emergency Preparedness
- Part 240 - Qualification and Certification of Locomotive Engineers
- Part 241 - United States Locational Requirement for Dispatching of United States Rail Operations
- Part 242 - Qualification and Certification of Conductors
- Part 244 - Regulations on Safety Integration Plans Governing Railroad Consolidations, Mergers, and Acquisitions of Control
- Part 245 - [Reserved]
- Part 250 - Guarantee of Certificates of Trustees of Railroads in Reorganization
- Part 256 - Financial Assistance for Railroad Passenger Terminals
- Part 260 - Regulations Governing Loans and Loan Guarantees Under the Railroad Rehabilitation and Improvement Financing Program
- Part 261 - Credit Assistance for Surface Transportation Projects
- Part 262 - Implementation of Program for Capital Grants for Rail line Relocation and Improvement Projects
- Part 266 - Assistance to States for Local Rail Service Under Section 5 of the Department of Transportation Act
- Part 268 - Magnetic Levitation Transportation Technology Deployment Program
- Part 269 - Alternate Passenger Rail Service Pilot Program
- Parts 270-299 - [Reserved]