Current through Oct. 15, 20261,304 sections · 39 parts · history to Oct. 1, 1996
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Every section of the Federal Motor Carrier Safety Regulations, 49 CFR Part 40 and Parts 300 through 399, pulled from the government's own text. Set a case date and every page, search and AI answer switches to the rules in force that day.
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12 topicsHours of Service
Part 395
Drugs & Alcohol
Part 382 · Part 40
Driver Qualification
Part 391
CDL Standards
Part 383 · Part 384
Driver Training
Part 380
Vehicle Parts & Accessories
Part 393
Inspection & Maintenance
Part 396
Driving Rules
Part 392
Insurance
Part 387
Hazmat Driving & Parking
Part 397
General & Definitions
Part 390
Safety Fitness & Penalties
Part 385 · Part 386
All parts
Browse with subpartsPart 40Procedures for Transportation Workplace Drug and Alcohol Testing ProgramsPart 303Civil RightsPart 325Compliance with Interstate Motor Carrier Noise Emission StandardsPart 350Motor Carrier Safety Assistance Program (MCSAP) and High Priority ProgramPart 360Fees for Motor Carrier Registration and InsurancePart 365Rules Governing Applications for Operating AuthorityPart 366Designation of Process AgentPart 367Standards for Registration with StatesPart 368Application 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 369Reports of Motor CarriersPart 370Principles and Practices for the Investigation and Voluntary Disposition of Loss and Damage Claims and Processing SalvagePart 371Brokers of PropertyPart 372Exemptions, Commercial Zones, and Terminal AreasPart 373Receipts and BillsPart 374Passenger Carrier RegulationsPart 375Transportation of Household Goods in Interstate Commerce; Consumer Protection RegulationsPart 376Lease and Interchange of VehiclesPart 377Payment of Transportation ChargesPart 378Procedures Governing the Processing, Investigation, and Disposition of Overcharge, Duplicate Payment, or Overcollection ClaimsPart 379Preservation of RecordsPart 380Special Training RequirementsPart 381Waivers, Exemptions, and Pilot ProgramsPart 382Controlled Substances and Alcohol Use and TestingPart 383Commercial Driver's License Standards; Requirements and PenaltiesPart 384State Compliance with Commercial Driver's License ProgramPart 385Safety Fitness ProceduresPart 386Rules of Practice for FMCSA ProceedingsPart 387Minimum Levels of Financial Responsibility for Motor CarriersPart 389Rulemaking Procedures—Federal Motor Carrier Safety RegulationsPart 390Federal Motor Carrier Safety Regulations; GeneralPart 391Qualifications of Drivers and Longer Combination Vehicle (LCV) Driver InstructorsPart 392Driving of Commercial Motor VehiclesPart 393Parts and Accessories Necessary for Safe OperationPart 395Hours of Service of DriversPart 396Inspection, Repair, and MaintenancePart 397Transportation of Hazardous Materials; Driving and Parking RulesPart 398Transportation of Migrant WorkersPart 399Employee Safety and Health StandardsApp.Appendices to Subchapter B of Chapter III
Recently amended
Full change log- Sept. 1, 2026§ 367.30 Fees under the Unified Carrier Registration Plan and Agreement for Registration Year 2023.amended
- Sept. 1, 2026§ 367.40 Fees under the Unified Carrier Registration Plan and Agreement for Registration Year 2024.amended
- Sept. 1, 2026§ 367.50 Fees Under the Unified Carrier Registration Plan and Agreement for Registration Years Beginning in 2025 and Each Subsequent Registration Year Thereafter.amended
- July 22, 2026§ 383.31 Notification of convictions for driver violations.amended
- July 22, 2026§ 384.409 Notification of noncompliance.amended
- July 22, 2026§ 395.22 Motor carrier responsibilities—In general.amended