What Part 396 is
49 CFR Part 396 is the Federal Motor Carrier Safety Regulations part titled Inspection, Repair, and Maintenance. It tells motor carriers and intermodal equipment providers how they must inspect, repair, and maintain commercial motor vehicles, and what records they must keep. Section 396.1 says every motor carrier and its officers, drivers, agents, representatives, and employees directly concerned with inspection or maintenance must know and comply with it.
That word "agents" is the reason this part matters to repair shops. When a carrier sends trucks to your shop for repairs, inspections, or DVIR sign-offs, your work becomes part of how that carrier meets Part 396. Shops that understand the part write better paperwork, catch more required work, and win more fleet trust.
Part 396 does not apply to covered farm vehicles or pipeline welding trucks, under 396.1(c) and (d).
Section by section, from a shop point of view
396.3 Inspection, repair, and maintenance
The core duty. Every carrier must systematically inspect, repair, and maintain all vehicles under its control, and parts and accessories must be in safe and proper operating condition at all times. That includes the parts in Part 393 and others that affect safety, such as frames, suspension, axles, wheels and rims, and steering.
Section 396.3(b) requires records for each vehicle controlled for 30 consecutive days: vehicle identification, a means to show the nature and due date of inspection and maintenance operations, and a record of inspections, repairs, and maintenance with date and nature. Section 396.3(c) says to keep them one year and six months after the vehicle leaves carrier control.
Shop angle: your invoices and work orders are often the carrier maintenance record. Clear dates, unit numbers, and repair descriptions help your customer pass an audit. A PM schedule is the "means to indicate the nature and due date" in 396.3(b)(2), so offering PM tracking is offering compliance help.
396.5 Lubrication
Every carrier must keep each vehicle properly lubricated and free of oil and grease leaks. Shop angle: leaks are a compliance item, not a cosmetic one. Note them on inspections and quote the repair.
396.7 Unsafe operations forbidden
A vehicle must not be operated in a condition likely to cause an accident or breakdown. A vehicle found unsafe on the highway may be operated only to the nearest place where repairs can safely be made, and only if that is less hazardous than leaving it on the highway. Shop angle: this is the legal backdrop for roadside repair. Sometimes the right call is to fix it where it sits rather than have the driver limp in.
396.9 Inspection of vehicles in operation
Covers roadside inspections by authorized personnel. A vehicle declared out of service cannot be operated until all repairs required by the out of service notice are completed. Under 396.9(d), the carrier examines the inspection report, corrects violations under 396.11(a)(3), and within 15 days after the inspection certifies that all violations were corrected and, if the issuing state agency asks, returns the form, keeping a copy.
Shop angle: when a truck arrives with a roadside inspection report, treat every listed violation as a work order line and give the carrier a clear record of each correction so they can certify within the 15 days.
396.11 Driver vehicle inspection reports
Drivers prepare a written report at the end of each day of work for each vehicle when a defect is found or reported. The carrier or its agent must repair defects likely to affect safety before the vehicle runs again, and certify on the report that each defect was repaired or that repair is unnecessary. Reports and certifications are kept three months. Paragraph (b) covers intermodal equipment. See DVIR requirements for repair shops.
396.12 Intermodal equipment provider reports
Requires intermodal equipment providers to set up a system for carriers and drivers to report damage, defects, or deficiencies. Shop angle: relevant if you repair chassis for an equipment provider.
396.13 Driver inspection
Before driving, the driver must be satisfied the vehicle is safe, review the last DVIR if one was required, and sign to acknowledge the review and the repair certification. Shop angle: your certification must reach the driver, on paper or electronically.
396.15 Driveaway-towaway operations
Special rules for vehicles being delivered in driveaway-towaway operations, including pre-trip and post-trip inspection of tow-bars and saddle-mounts. Maintenance records, DVIRs, and annual inspections are not required for a vehicle that is part of the shipment being delivered.
396.17 Periodic inspection
The annual inspection. Every commercial motor vehicle, including each unit in a combination, must pass an inspection of all Appendix A components at least once in the preceding 12 months, with documentation on the vehicle. A carrier may use a commercial garage as its agent if the garage has appropriate facilities and qualified inspectors. See how to do a DOT annual inspection.
396.19 Inspector qualifications
Who may perform annual inspections: someone who understands Part 393 and Appendix A, has mastered the methods and tools, and has a qualifying program, certificate, or at least one year of training or experience. Evidence is kept while the person inspects and one year after. See who can perform a DOT annual inspection.
396.21 Periodic inspection recordkeeping
What the annual inspection report must contain, and that it is kept 14 months from the date of the report.
396.23 Equivalent to periodic inspection
When a vehicle is subject to a mandatory state or equivalent inspection program that FMCSA has found as effective as 396.17, the carrier meets the annual inspection requirement through that program.
396.25 Qualifications of brake inspectors
Anyone responsible for making sure brake inspection, maintenance, service, or repair meets federal standards must be qualified by training or experience, with evidence kept. Passing the CDL air brake tests qualifies a person for air brake inspections.
Appendix A to Part 396
The Minimum Periodic Inspection Standards. It lists the defects that fail a vehicle in 15 areas: brake system, coupling devices, exhaust, fuel, lighting, safe loading, steering, suspension, frame, tires, wheels and rims, windshield glazing, windshield wipers, motorcoach seats, and rear impact guards.
How Part 396 connects to the rest of the regulations
Part 396 points to other parts often. Part 393 sets the parts and accessories necessary for safe operation, which is the equipment standard behind both 396.3 and Appendix A. Part 390 holds general definitions, including commercial motor vehicle in 390.5, and the electronic records rule in 390.32. When in doubt, read the definition first.
What this means for how a shop works
- Write repair lines that state the complaint, cause, and correction, with date and unit.
- Turn every DVIR item and roadside violation into its own line.
- Keep annual inspection reports for at least 14 months and keep inspector files current.
- Offer PM schedules and reminders, which give carriers the due date tracking 396.3 asks for.
- Make records searchable by unit and date.
MetaFleet supports this kind of work with digital inspections, PM programs and reminders, work orders, and a fleet customer portal. See inspections and DVIR features, preventive maintenance, or get a walkthrough.
Related reading
- How long to keep truck maintenance records
- 49 CFR 396, DVIR, and annual inspection in the glossary