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.

This fifth volume contains regulations authored by the Department of Transportation’s Federal Motor Carrier Safety Administration:

Subchapter A—General Regulations

• Parts 300-302 - [Reserved]
• Part 303 - Civil Rights
• Part 325 - Compliance With Interstate Motor Carrier Noise Emission Standards

Subchapter B—Federal Motor Carrier Safety Regulations

• Part 350 - Commercial Motor Carrier Safety Assistance Program
• Part 355 - Compatibility of State Laws and Regulations Affecting Interstate Motor Carrier Operations
• Part 356 - Motor Carrier Routing Regulations
• Part 360 - Fees for Motor Carrier Registration and Insurance
• Part 365 - Rules Governing Applications for Operating Authority
• Part 366 - Designation of Process Agent
• Part 367 - Standards for Registration With States
• Part 368 - Application for a Certificate of Registration to Operate in Municipalities in the United States on the United States-Mexico International Border or Within the Commercial Zones of Such Municipalities.
• Part 369 - Reports of Motor Carriers
• Part 370 - Principles and Practices for the Investigation and Voluntary Disposition of Loss and Damage Claims and Processing Salvage
• Part 371 - Brokers of Property
• Part 372 - Exemptions, Commercial Zones, and Terminal Areas
• Part 373 - Receipts and Bills
• Part 374 - Passenger Carrier Regulations
• Part 375 - Transportation of Household Goods in Interstate Commerce; Consumer Protection Regulations
• Part 376 - Lease and Interchange of Vehicles
• Part 377 - Payment of Transportation Charges
• Part 378 - Procedures Governing the Processing, Investigation, and Disposition of Overcharge, Duplicate Payment, or Overcollection Claims
• Part 379 - Preservation of Records
• Part 380 - Special Training Requirements
• Part 381 - Waivers, Exemptions, and Pilot Programs
• Part 382 - Controlled Substances and Alcohol Use and Testing
• Part 383 - Commercial Driver's license Standards; Requirements and Penalties
• Part 384 - State Compliance With Commercial Driver's license Program
• Part 385 - Safety Fitness Procedures
• Part 386 - Rules of Practice for Motor Carrier, Intermodal Equipment Provider, Broker, Freight Forwarder, and Hazardous Materials Proceedings
• Part 387 - Minimum Levels of Financial Responsibility for Motor Carriers
• Part 388 - Cooperative Agreements With States
• Part 389 - Rulemaking Procedures: Federal Motor Carrier Safety Regulations
• Part 390 - Federal Motor Carrier Safety Regulations; General
• Part 391 - Qualifications of Drivers and Longer Combination Vehicle (LCV) Driver Instructors
• Part 392 - Driving of Commercial Motor Vehicles
• Part 393 - Parts and Accessories Necessary for Safe Operation
• Part 394 - [Reserved]
• Part 395 - Hours of Service of Drivers
• Part 396 - Inspection, Repair, and Maintenance
• Part 397 - Transportation of Hazardous Materials; Driving and Parking Rules
• Part 398 - Transportation of Migrant Workers
• Part 399 - Employee Safety and Health Standards