The rule in one paragraph
49 CFR 396.11(a)(3) says that before a driver is required or permitted to operate a vehicle, every motor carrier or its agent must repair any defect or deficiency listed on the driver vehicle inspection report (DVIR) that is likely to affect safe operation, and must certify on the report that lists the defect that it has been repaired or that repair is unnecessary, before the vehicle is operated again. The next driver then reviews the report and signs under 396.13. The carrier keeps the report, the repair certification and the driver's review certification for three months (396.11(a)(4)).
Everything below is about doing that certification so it is clear, honest and easy to defend.
Who signs
The motor carrier or its agent. In a fleet with its own shop, that is usually a technician or maintenance supervisor. When an outside shop or a mobile technician does the work, the shop is acting as the agent, and the person who did or supervised the repair should sign. Agree with each fleet customer in advance on who at your shop signs and how.
The person signing should be someone who can stand behind the work. For brake defects, that means a person who meets the brake qualification rule in 49 CFR 396.25.
Step by step
1. Get the actual report
Ask for the DVIR itself or a clear photo of it, not a phone summary. You need the date, vehicle identification, driver signature and the defects exactly as listed. Attach it to your repair order.
2. Make one line per defect
If the driver listed three defects, open three repair lines. Copy the driver's wording into the complaint. This keeps the certification traceable item by item.
3. Verify each defect
Check each item. Three outcomes are possible:
- Defect confirmed: repair it.
- Defect not present: the item works or meets the standard when tested. Record what you checked and the result.
- Defect confirmed but the customer will not approve the repair: do not certify. See below.
4. Repair and record cause and correction
Write the cause and the correction in plain words: what failed, what you did, how you tested it. A reviewer should understand the line without calling you. See how to write a repair line using complaint, cause and correction.
5. Write the certification
The rule asks for a certification that the defect was repaired or that repair is unnecessary. A certification block that works on paper or in an app contains:
- each defect, matched to its outcome;
- the name of the person certifying, and the shop name if you are an outside agent;
- signature;
- date (and time, if the fleet runs multiple shifts).
Sample wording, defect repaired:
Defect: left rear marker lamp inoperative. Repaired: replaced corroded pigtail connector, tested, lamp operates. Certified repaired by J. Smith, Example Diesel Repair, 10/30/2026.
Sample wording, repair unnecessary:
Defect: air leak at trailer gladhands. Inspected with system charged; no leak found at gladhands, seals intact, connection tested. Repair unnecessary. Certified by J. Smith, Example Diesel Repair, 10/30/2026.
These samples are illustrations of the content, not mandated language. The regulation does not prescribe a specific sentence.
6. Return the paperwork with the vehicle
The next driver must review the last report and sign that there is a certification that required repairs were performed (396.13). If the certified report stays at your shop, the driver cannot do that. Send the certified report, or enter the certification in the fleet's electronic DVIR system, before the truck leaves.
When the customer declines a safety repair
If a listed defect is likely to affect safe operation and the customer declines the repair, you cannot honestly certify that it was repaired or that repair is unnecessary. Write on your repair order that the repair was recommended and declined, with the date and the name of the person who declined, and tell the customer in writing. Section 396.11(a)(3) puts the duty to repair before operation on the carrier. Do not sign a certification to get the truck out the door.
Electronic DVIRs
Under 396.11(a)(6), DVIRs may be created and kept electronically in accordance with 49 CFR 390.32, which sets rules for electronic documents and signatures. Many fleets use telematics apps for DVIRs. If a fleet gives your technicians access, certify in the app and reference the app record on your repair order. If not, certify on a printed copy of the report and send it back with a photo the fleet can upload. Settle this with each fleet at account setup, not on a road call.
Certification checklist
- [ ] DVIR attached to the repair order
- [ ] One repair line per listed defect
- [ ] Each defect marked repaired, repair unnecessary, or declined
- [ ] Cause and correction written for each repaired item
- [ ] What was checked written for each repair unnecessary item
- [ ] No certification on declined safety items
- [ ] Signer name, shop name, signature and date
- [ ] Brake defects signed by a person qualified under 396.25
- [ ] Certified report returned to the fleet or entered in its system
- [ ] Shop copy kept with the repair order
Mistakes that cause trouble in audits
Blanket certification. "All defects repaired" with one signature makes it hard for the carrier to show which defect was fixed and how.
Certification without a repair order. The carrier must keep maintenance records showing the date and nature of repairs under 396.3. A certification that does not match any repair record is weak evidence.
Dates that do not line up. A certification dated before the repair order was opened, or after the truck was already dispatched, raises questions. Use the actual date and time.
Signing for someone else's work. Only certify what your shop inspected or repaired.
Certifying on a road call
Mobile technicians often certify in a fleet yard or at the roadside with no office nearby. Prepare for that: carry the fleet's preferred method (app login or printed certification forms), take a photo of the certified report before leaving, and attach it to the repair order the same day. If a defect needs a part you do not have, certify only the items you completed, leave the open item uncertified and tell the dispatcher, so the fleet knows the vehicle is not cleared to run.
Record keeping
The carrier's DVIR retention is three months under 396.11(a)(4). The repair order is part of the vehicle's maintenance record, which 396.3(c) requires the carrier to keep for 1 year where the vehicle is housed or maintained and for 6 months after the vehicle leaves the carrier's control. Keep your own copy at least that long; many shops keep repair records longer for tax and warranty reasons. See how long to keep truck maintenance records.
Doing this faster
The slow part of DVIR certification is usually not the repair; it is the writing. MetaFleet's AI writes clean repair lines from a technician's shorthand notes while keeping the technician's words, and the dispatcher can split a complaint into one repair line per problem. Inspections can be built from your own PDF form, and fleet customers can approve estimates line by line in the customer portal. See AI invoicing, inspections and DVIRs, or get a walkthrough.
This guide summarizes 49 CFR 396.11, 396.13, 396.3, 396.25 and 390.32 as shown on eCFR on October 30, 2026. It is not legal advice; read the current text before relying on it.