Level 1 DOT inspection checklist: prep in the inspector's order
A Level 1 is the inspection where everything gets looked at: the driver's paperwork, the walk-around, and the brakes underneath. It follows the same steps every time, so you can check each one before an inspector does.
Written by Rigo Diaz
Level 1 inspections in numbers
A Level 1 DOT inspection checklist follows CVSA's 37-step procedure: steps 1 to 12 check the driver's license, medical status, logs, and inspection reports; steps 13 to 36 cover the walk-around, the undercarriage, brake adjustment, and the air system. Prep the paperwork first, then the brakes, tires, and lights that cause most out-of-service orders.
I spent more than six years in risk management before I founded Simplex, and I have led it for more than 25 years since. A Level 1 inspection is the closest thing a carrier gets to a full risk review on the side of the road, and its results stay on your record for two years.
You cannot choose the day it happens. You can choose what the inspector finds. Below is the checklist the inspector uses, in the order they use it, and what to have ready at each stage.
The full briefing, read aloud
7 chapters. Select one to jump to it.
Generated with AI text-to-speech from this article's key insights, in order, rather than reading it word for word. Chapter times come from a transcript of the audio. The article itself was written and reviewed by Rigo Diaz.
Key takeaways
It runs 37 steps in a fixed order
Driver paperwork first, then a walk-around, then under the truck for the axles and brakes, then the air system and fifth wheel.
Medical status is now checked electronically
CDL holders no longer carry the medical card, and since October 12, 2026 a paper copy is not accepted as proof outside Alaska.
Brakes and tires cause most out-of-service orders
At Roadcheck 2026, brake-related problems were 39.1% of vehicle out-of-service violations and tires another 20.9%.
Annual inspection proof rides on every unit
Each tractor and trailer needs proof on the vehicle of a periodic inspection in the past 12 months.
The report starts a 15-day clock
The carrier certifies every correction within 15 days and keeps a copy for 12 months.
In this articleContents
What is on the Level 1 DOT inspection checklist?
The Level 1 DOT inspection checklist is CVSA's 37-step North American Standard Level I procedure. Certified inspectors work through it in the same order everywhere, so you can prep in that order too.
| Steps | What the inspector does | What to have ready |
|---|---|---|
| 1-4 | Chooses the site, approaches the truck, greets and interviews the driver | A driver who can explain the load, the route, and the day's hours |
| 5-7 | Collects documents, checks for hazardous materials, identifies the carrier | Documents within reach; carrier name and USDOT number on both sides of the cab |
| 8-12 | Examines the license, medical and SPE certificates, logs, and inspection reports | The driver documents in the next section |
| 13-27 | Walks around the tractor and trailer, front to rear on both sides | Working lights, sound tires and wheels, secure coupling and cargo, no leaks |
| 28-32 | Goes under the vehicle: axles, brake adjustment, tractor protection and emergency brakes | Brakes in adjustment; intact chambers, hoses, and air lines |
| 33-36 | Tests the low-air warning, air loss rate, steering wheel lash, and fifth wheel movement | An air system that holds pressure; tight steering and coupling |
| 37 | Completes the inspection | The report, and a decal if the vehicle passes |
Steps 28 to 32 and 36 are what make it a Level 1. A Level 2 walk-around skips them, so the inspector never gets under the truck. If more than 20% of pushrod travel on exposed pushrods cannot be measured, CVSA has the inspection recorded as a Level 2. For how Level 1 compares with the other eight, see the DOT inspection levels.
CVSA prints the step chart in its North American Standard Inspection Program brochure, the closest thing to an official Level 1 checklist PDF. Light-duty vehicles with hydraulic brakes get a separate Level I light-duty procedure, which adds an inside-cab inspection, the trailer brake system, and the ball hitch.
What documents does the driver need for a Level 1?
The driver needs a valid license, current medical certification, logs, and the vehicle's inspection reports. Missing medical certification was the top reason drivers were placed out of service at CVSA's 2026 International Roadcheck, at 27% of driver out-of-service violations.
- License: valid, and a CDL when the vehicle requires one. No commercial driver's license was the third most common driver out-of-service violation at Roadcheck 2026.
- Medical certification: CDL and CLP holders have not had to carry the medical examiner's certificate since June 23, 2025 (49 CFR 391.41). Since October 12, 2026, a paper copy no longer counts as proof outside Alaska, so confirm each driver's state record shows a current certificate. Drivers without a CDL still carry theirs.
- Medical variances: a driver certified through an FMCSA exemption letter or a skill performance evaluation (SPE) certificate keeps a copy on them while on duty.
- Logs: records for the previous 7 consecutive days (49 CFR 395.8). With an ELD, an information packet with a data transfer sheet, a malfunction sheet, and blank graph-grid logs for at least 8 days (49 CFR 395.22).
- Driver vehicle inspection report: when the last report listed a defect, the carrier certifies the repair, and the driver reviews and signs it before driving (49 CFR 396.11 and 396.13). Electronic reports are allowed; carriers operating a single vehicle are exempt.
- Periodic inspection proof: each unit, tractor and trailer alike, carries proof of an annual inspection in the past 12 months, as the report or a sticker or decal (49 CFR 396.17).
Registration, permits, and the rest of the papers that ride in the cab are covered in our DOT compliance checklist.
How do you get the truck ready for a Level 1?
Start with what puts trucks out of service most often: brakes, tires, cargo securement, and lights. At Roadcheck 2026, those were the top five vehicle out-of-service violations in North America, with brakes counted twice.
| Violation | Out-of-service violations | Share |
|---|---|---|
| Brake systems | 3,379 | 24.3% |
| Tires | 2,914 | 20.9% |
| 20% defective brakes | 2,072 | 14.9% |
| Cargo securement | 1,724 | 12.4% |
| Lights | 1,659 | 11.9% |
- Brakes: adjustment, air leaks, chambers, and hoses. The inspector checks brake adjustment at step 31; our brake inspection checklist covers what they look for.
- Tires: at least 4/32 inch of tread on front tires and 2/32 inch on the rest, with no exposed ply or belt, no separation, and no audible leak (49 CFR 393.75).
- Lights: headlamps, tail lamps, stop lamps, turn signals, and lamps or flags on projecting loads, all CVSA critical inspection items.
- Cargo securement: a critical inspection item and the 2026 Roadcheck vehicle focus.
- Emergency equipment: a charged, securely mounted fire extinguisher with its UL rating, and three reflective triangles (49 CFR 393.95). Spare fuses have not been required since April 20, 2026. See which fire extinguisher you need.
- Markings: the carrier's name and USDOT number on both sides of the power unit, readable from 50 feet in daylight (49 CFR 390.21T).
How to prep for a Level 1 DOT inspection as a routine
Level 1 inspections come without notice, so prep has to be a routine rather than an event. Each step below has an owner and a moment when it happens.
Step 1: Check medical and license status before dispatch
Confirm each driver's license and medical certification show as current in the state record. A paper card in the cab no longer covers a gap.
Step 2: Walk the truck in the inspector's order
Build the pre-trip around steps 13 to 27: the front of the tractor, the left side, the trailer, the rear, and back up the right side. Same order every day, same order as the inspector.
Step 3: Measure brakes at every preventive maintenance visit
Brake adjustment is checked under the truck, where a pre-trip rarely reaches. Make it a line on every maintenance work order.
Step 4: Keep the paperwork current on every unit
Annual inspection proof on each tractor and trailer, a complete ELD packet in each cab, and a repair certification on any inspection report that listed a defect.
Step 5: Route every inspection report to one owner
The driver hands the report over at the next terminal, or sends it right away if not due at one within 24 hours. One person should own the 15-day clock that follows.
What happens after a Level 1 DOT inspection?
A vehicle with no violations of the critical inspection items gets a CVSA decal. An out-of-service violation stops the driver, the vehicle, or both until it is fixed. Anything in between is written on the report, and the truck moves on.
- Decal: valid for the month it was applied plus two months, and vehicles with a valid decal generally are not re-inspected. No decal is issued if the carrier has no USDOT number or an inactive one, lacks operating authority, or is under a federal out-of-service order.
- Out of service: no one may drive the vehicle until the repairs are done, and it may only be towed away by a vehicle using a crane or hoist (49 CFR 396.9).
- The report: within 15 days, the carrier certifies that every violation was corrected and keeps a copy for 12 months. Since July 22, 2026, the form goes back to the state only when that state asks for it.
If a violation was recorded in error, request a review through FMCSA's DataQs system.
How does a Level 1 inspection affect your safety record?
A Level 1 feeds both sides of your record. FMCSA's Safety Measurement System counts it as a driver inspection and a vehicle inspection, so one stop can move your driver BASICs and Vehicle Maintenance at the same time.
- Violations count for 24 months, whether or not the officer writes a ticket.
- Recent results weigh more: inspections and violations from the last six months count three times as much as those 12 to 24 months old.
- Clean inspections count too: an inspection with no violations is added to the total your violations are measured against.
In 2025, 29.4% of U.S. Level 1 inspections found at least one out-of-service violation. Every clean one adds weight on the other side of the scale. For how that record reaches your premiums, see how CSA scores affect truck insurance, and for help with scores already on the record, our CSA program.
How Simplex helps you pass a Level 1
The inspection checks drivers, vehicles, and paperwork. We help keep all three ready, and work on the record that follows.
Driver files and medical checks
Our DOT safety compliance team manages driver files with CDL and medical exam verification, so a lapsed status shows up before an inspection does.
Maintenance records and mock audits
Our compliance programs include vehicle maintenance records, DataQs requests, a DOT mock audit, and monthly safety reviews.
Help with CSA scores
Our CSA program support works through the inspection violations behind your scores and how to improve them.
Frequently asked questions
What is a Level 1 DOT inspection?+
Is there an official Level 1 DOT inspection checklist PDF?+
Does the driver need a paper medical card for a Level 1 inspection?+
What is the difference between a Level 1 and a Level 2 inspection?+
What happens if a truck fails a Level 1 DOT inspection?+
Where this information comes from
The procedure and results below come from CVSA and FMCSA, and the requirements from federal regulation, checked on October 16, 2026.
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1
CVSA — Understanding the North American Standard Inspection Program
The 37-step chart by inspection level, decal eligibility, and how long a decal is valid.
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2
CVSA — All Inspection Levels
What a Level I covers, and the 20% pushrod rule that turns it into a Level II.
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3
CVSA — Inspection Procedures
The Level I procedure step by step, and the separate light-duty hydraulic procedure.
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4
CVSA — Operational Policies for Roadside Inspections
Operational Policy 5 (revised April 23, 2026): critical inspection items, decal rules, and re-inspections.
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5
CVSA — 2026 International Roadcheck Results
Top vehicle and driver out-of-service violations from 54,575 inspections, May 12-14, 2026.
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6
FMCSA — Roadside Inspections by Level
2025 U.S. Level I inspections and how many had out-of-service violations.
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7
Federal Register — Medical Examiner's Certificate Exemption for Alaska
Paper medical certificates no longer accepted as proof outside Alaska as of October 12, 2026.
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8
eCFR — 49 CFR 396.9
Out-of-service vehicles and the carrier's 15-day duty to certify and keep inspection reports.
Written by
Rigo Diaz
Founder & CEO, Simplex Group
Founder and CEO of Simplex Group, with more than 25 years leading the company and helping trucking entrepreneurs navigate compliance, insurance, and the day-to-day demands of running a carrier. Before founding Simplex, he spent more than six years in risk management, experience that continues to shape how he approaches insurance, compliance, and carrier risk today.
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You cannot pick the day. You can pick what the inspector finds.
A Level 1 checks the same 37 steps every time, in the same order. Your own team can check every one of them first, and every clean result counts in your favor for two years.
If you want a second set of eyes on your driver files, your maintenance records, or the inspections already on your record, talk to our team.