On this page
- What does a DOT annual inspection check?
- Who is qualified to perform one?
- What paperwork do you get, and how long must it be kept?
- Do you inspect trailers?
- What happens if a truck fails?
- Can you inspect a whole fleet on a schedule?
- Does North Carolina require its own inspection on top of the federal one?
- Which rules and records does an annual inspection involve?
- Annual inspection, PM service or roadside inspection: what is the difference?
- Fleet and service jobs
- How does an annual inspection run at the shop?
- Questions
What does a DOT annual inspection check?
It checks every component listed in Appendix A to Part 396 of the federal motor carrier rules, and a truck may not be used unless each of those components passed an inspection within the previous 12 months.
Appendix A lists fifteen groups:
- Brake system
- Coupling devices
- Exhaust system
- Fuel system
- Lighting devices
- Safe loading
- Steering mechanism
- Suspension
- Frame
- Tires
- Wheels and rims
- Windshield glazing
- Windshield wipers
- Motorcoach seats, on buses
- Rear impact guard, on the list since December 2021
The rule sets a minimum. A carrier can inspect more often.
Wear found beyond the list, such as a fluid leak or a worn belt, is usually noted too, so it can be planned for.
Sources: 49 CFR 396.17 · Appendix A to Part 396 · Federal Register 2021-23796
Who is qualified to perform one?
An inspector qualified under 49 CFR 396.19: someone who understands the inspection criteria in Part 393 and Appendix A, can identify defective components, and knows the methods and tools the inspection uses.
The rule gives three routes to that qualification:
- A federal or state training program
- A certificate from a state or a Canadian province
- At least one year of combined training or experience
There is no federal certificate for annual inspectors, so the honest description is qualified under 49 CFR 396.19.
Brake work has its own rule. Anyone responsible for inspecting, maintaining, servicing or repairing brakes must be qualified under 49 CFR 396.25.
At the shop, annual inspections are done by mechanics qualified under 49 CFR 396.19, and brake work by mechanics qualified under 49 CFR 396.25, as the rules require.
Sources: 49 CFR 396.19 · 49 CFR 396.25
What paperwork do you get, and how long must it be kept?
A written inspection report, which the carrier keeps for 14 months where the vehicle is housed or maintained.
The report identifies the inspector, the carrier, the date, the vehicle and the components inspected, records what passed and what failed against Appendix A, and certifies that it is accurate. On the truck itself, the proof can be a copy of the report or a sticker or decal that carries the same required information.
The report on file and the proof on the truck answer to two different people: an auditor asks for the first, and an officer at a roadside inspection looks for the second.
Sources: 49 CFR 396.21 · 49 CFR 396.17
Do you inspect trailers?
Yes. The shop inspects and repairs trailers, including dry vans, flatbeds, reefer trailers, dump trailers and tanker running gear.
Trailers need the periodic federal inspection the same as tractors. Rear impact guards joined the inspection list in December 2021. Air-braked trailers built on or after March 1, 1998 must have ABS with a malfunction indicator lamp.
Trailer work in customers' reviews includes a replaced trailer airbag, a blown air bag with a failed leveling valve, and a patch. See trailer repair for the repairs an inspection can turn up.
Sources: 49 CFR 393.55 · Federal Register 2021-23796
What happens if a truck fails?
The truck can't be used until each failed component is repaired, because every component on the list has to have passed within the previous 12 months.
The report lists what failed. The repair is what makes the truck legal to run again, so the estimate for that repair matters as much as the inspection.
Brake, suspension, engine and trailer repairs that an inspection turns up are done in-house at the shop, and a repair is estimated and approved before work starts.
At the roadside, brakes are the most common problem. In CVSA's 2026 International Roadcheck, brake systems were the top vehicle out-of-service category, with 3,379 violations, or 24.3% of vehicle out-of-service violations. See truck brake repair for air brake work.
Sources: 49 CFR 396.17 · FleetOwner, Aug 26 2026
Can you inspect a whole fleet on a schedule?
Yes, on the schedule the fleet sets. The shop is open 24 hours a day, 7 days a week, and it inspects trailers as well as trucks.
A written schedule keeps a fleet out of trouble two ways. Each unit comes due 12 months after its last inspection, so a truck inspected on time always has its last report on file when the next one is due.
Spreading the dates across the year also means no single week takes every truck off the road.
Federal rules let a carrier use a commercial garage or similar business as its agent for the annual inspection, provided that business operates and maintains facilities appropriate for commercial vehicle inspections and employs qualified inspectors.
See fleet maintenance for PM service on the schedule a fleet sets.
Sources: 49 CFR 396.17
Does North Carolina require its own inspection on top of the federal one?
No, not for trucks under the federal inspection. North Carolina applies its state safety inspection only to vehicles that are not subject to inspection under 49 CFR Part 396.
- Intrastate trucks. North Carolina applies the federal inspection and maintenance rules to intrastate vehicles over 10,000 lb GVWR, and those trucks must display a current federal inspection certificate.
- Emissions. Diesel vehicles are exempt from North Carolina's emissions inspection, which applies to gasoline vehicles of 8,500 lb GVWR or less.
- Vehicles outside Part 396. A vehicle registered in North Carolina that is not under the federal inspection, such as a private diesel pickup, takes the state safety inspection at a DMV-licensed station, done by a licensed safety inspection mechanic.
- South Carolina. Its regulations apply federal Parts 390 to 399 to motor carrier vehicles in both interstate and intrastate commerce.
The shop repairs Ram, Ford, Chevy and GMC diesel pickups.
Sources: N.C. G.S. 20-183.2 · 14B NCAC 07C .0101 · NC DEQ emissions inspection · N.C. G.S. 20-183.4 · S.C. Code Regs. 38-424
Which rules and records does an annual inspection involve?
An annual inspection sits inside a set of federal rules for inspection, qualification and records, with North Carolina and South Carolina rules on top. The trailer items below are checks a trailer brings to the inspection. The shop inspects heavy-duty Class 8 tractors, medium-duty trucks such as box trucks, light-duty diesel pickups that fall under the federal rule, and trailers. It works on Freightliner, Peterbilt, Kenworth, Volvo, Mack, International and Western Star trucks.
Federal rules
State rules
Trailer items
Vehicles inspected
Truck makes
The shop behind the work
- Technicians
- About 20
- Trucks we run ourselves
- 55
- In trucking since
- 2013
- Fleet terms
- Net 30 to 45
Annual inspection, PM service or roadside inspection: what is the difference?
Three kinds of check land on a truck. They are done by different people, for different reasons, and leave different paper behind.
| Check | Who performs it | What it covers | What paper it produces |
|---|---|---|---|
| DOT annual inspection | The carrier, or a garage or similar business acting as its agent, using an inspector qualified under 49 CFR 396.19 | At least every component in Appendix A to Part 396, within the previous 12 months | An inspection report the carrier keeps 14 months, and a copy of the report or a decal on the vehicle |
| PM service | The carrier's own mechanics or a repair shop | The maintenance on the fleet's schedule: fluids, filters, lubrication and wear checks | A work order or invoice for the maintenance records 49 CFR 396.3 requires |
| Roadside inspection | An enforcement officer, at a weigh station or on the roadside | The vehicle and, depending on the inspection, the driver and paperwork. Serious defects put the truck out of service | A roadside inspection report. Vehicle defects count in the carrier's CSA Vehicle Maintenance category |
Annual inspections and PM service are both done in-house at the shop.
Fleet and service jobs
No customer has written about an inspection yet. These two reviews are the closest: a company truck repaired after a quote, and a box truck in for a full service.
A company truck, quoted first and back in a few days
- What failed
- A company truck needed repair work.
- What we did
- The shop quoted the job first, then did the work with hardly any downtime.
- Time in the shop
- A few days
A 26 ft box truck in for a full service
- What failed
- The box truck came in for a full service and also had an electrical problem.
- What we did
- The shop did the service, found the minor electrical issue, and finished the job on the day it said it would.
How does an annual inspection run at the shop?
The usual steps from booking to the inspection report.
Booking
Call (980) 313-6059 to book a time. The phone is answered 24 hours a day, 7 days a week.
Check-in
Bring the truck with its unit number and VIN, and the last inspection report if there is one.
Inspection
Each component group on the Appendix A list is checked, and the result is recorded as passed or failed.
Results
Anything that failed is explained before a repair is quoted.
Repairs
Repairs are approved before work starts, and carry a warranty of 1 to 3 years, depending on the part and its maker's warranty.
Report
The carrier gets the written inspection report for its file, and proof of the inspection has to be carried on the truck, as the rules require.
Inspections, and the repairs they turn up, are done in-house at the shop in Indian Trail.
Questions
How long does a DOT inspection take at the Indian Trail shop?
It depends mostly on what the inspection finds. A truck that passes needs only the inspection itself, while one that fails waits on its repairs, and sometimes on parts. Bring the unit number, the VIN and the last inspection report, and say whether a PM service is due at the same visit.
Can a truck that fails its inspection in Union County be repaired the same visit?
The repairs an inspection turns up are done in-house at the shop, once the estimate is approved, so the truck does not have to go anywhere else for them. Whether they are finished in the same visit depends on the repair and on parts. The inspection report lists what failed, and under 49 CFR 396.17 a failed brake, light or tire has to be fixed before the truck goes back to work.
Do Charlotte fleets need an NC state safety inspection on top of the federal annual?
No, not for trucks under the federal Part 396 inspection. North Carolina applies its state safety inspection only to vehicles not subject to 49 CFR Part 396, and diesel vehicles are exempt from the state emissions inspection.
Do you inspect trailers for fleets in Monroe?
Yes. The shop inspects dry vans, flatbeds, reefer trailers, dump trailers and tanker running gear. Trailers need the periodic federal inspection the same as tractors, and rear impact guards have been on the inspection list since December 2021.
Do fleets in Matthews get payment terms on inspections and repairs?
Yes. Fleet accounts get net 30 to 45 terms. Payment is by check, card, cash, Zelle, Apple Pay or Cash App.