Almost every roadside “DOT inspection” is run by a state officer or certified civilian inspector, funded through the federal Motor Carrier Safety Assistance Program and trained to a single continent-wide standard — so an inspection in Texas counts the same as one in Ohio.
That standard is the North American Standard Inspection Program, written by the Commercial Vehicle Safety Alliance (CVSA) and used across the United States, Canada, and Mexico. The federal authority to inspect a vehicle in operation lives at 49 CFR § 396.9; the levels themselves are a CVSA program, not a section of the regulations. Whatever the level, the result is written up on the same federal form — the Driver Vehicle Examination Report (§ 396.9(b)).
The most useful thing to understand up front: the level number is scope, not severity. A Level I is the most thorough; a Level III only looks at the driver. But a “lower” level is not a lighter consequence — a driver-only Level III can still end with your driver parked at the side of the road.
◆ How to read the levels
Each level differs by what it covers — the driver, the vehicle, both, or neither.
One standard, eight scopes.
From the full 37-step Level I down to the wireless Level VIII — and which ones put a decal on the glass.
- I◆ Decal
Level I — North American Standard Inspection
DriverVehicleThe full examination — roughly 37 steps across the driver and the vehicle. Every credential, the hours-of-service record, and a hands-on look at brakes, steering, suspension, tires, lighting, coupling, and securement. This is the inspection people picture when they say “DOT inspection.”
You’ll see this: The roadside default at a staffed scale or inspection station.
- IINo decal
Level II — Walk-Around Driver/Vehicle Inspection
DriverVehicleEverything in a Level I that the inspector can verify without physically getting under the vehicle. Same driver check; a walk-around vehicle check. Because the inspector never gets under the truck, a clean Level II does not earn a decal.
You’ll see this: Common when a full under-vehicle inspection is not practical.
- IIINo decal
Level III — Driver/Credential/Administrative Inspection
DriverDriver-only. CDL and endorsements, medical certificate, record of duty status, hours of service, seatbelt, the driver's paperwork, and CDL/Clearinghouse status. No part of the vehicle is examined — but a driver violation here can still put the driver out of service.
You’ll see this: The highest-volume level — fast, credential-focused.
- IVNo decal
Level IV — Special Inspection
One itemA one-time examination of a single item — usually to support a study, check a suspected trend, or verify a specific component during an enforcement campaign. Narrow by design.
You’ll see this: Rare; typically part of a research or enforcement push.
- V◆ Decal
Level V — Vehicle-Only Inspection
VehicleThe complete Level I vehicle exam performed without the driver present — at your terminal, a carrier's yard, or during a compliance review. A clean Level V earns a decal just like a Level I.
You’ll see this: At your yard or during an audit, not at the roadside.
- VI◆ Decal
Level VI — Enhanced Inspection for Radioactive Shipments
DriverVehicleRadiologicalAn enhanced standard for transuranic waste and Highway Route Controlled Quantities (HRCQ) of radioactive material, with tighter out-of-service criteria than Level I. A clean inspection earns a special decal that is removed when the load reaches its destination.
You’ll see this: Only if you haul select radioactive loads.
- VIINo decal
Level VII — Jurisdictional Mandated Inspection
VariesInspections a jurisdiction mandates that don't fit Levels I–VI — school buses, shared-ride and limousine services, hotel shuttles, and certain intrastate programs. The criteria are set by the program, not the federal standard.
You’ll see this: Passenger carriers and niche intrastate operations.
- VIIINo decal
Level VIII — North American Standard Electronic Inspection
ElectronicA wireless inspection performed while the vehicle is in motion — identifying and descriptive data pulled electronically with no direct contact between officer and driver. The newest level, expanding as the supporting systems roll out.
You’ll see this: The future-facing level; growing as electronic systems mature.
◆ The one thing drivers get wrong ◆
The level number is scope, not severity. A Level III never touches the truck — and can still put your driver out of service for ten hours.
Two sides of the full inspection.
A Level I splits cleanly in two: the driver side (credentials and the log) and the vehicle side (the hardware). Know both lists and the roadside holds no surprises. The vehicle side always starts with brakes — they are, year after year, the largest single out-of-service category.
Driver side
§ 391 · Part 395 · § 382.701
CDL, endorsements, and current license status
Medical examiner’s certificate (and SPE certificate if applicable)
Record of duty status / ELD — and the ability to transfer it electronically (Part 395)
Hours-of-service compliance against the 11 / 14 / 60-or-70 limits
Seatbelt use and the driver’s record of violations
Signs of alcohol or drug use; CDL and Clearinghouse status (§ 382.701)
Driver vehicle inspection report and shipping papers
Vehicle side
§ 396.9 · Part 393 · § 392.9
Brake systems — the single largest out-of-service category nationally
Steering, suspension, and frame
Tires, wheels, rims, and hubs
Lighting devices and reflectors
Coupling devices and the fifth wheel
Exhaust, fuel system, and driveline
Cargo securement (§ 392.9 and Part 393)
Windshield, wipers, and emergency exits where applicable
The sticker that buys you time.
Pass a Level I, V, or VI with no out-of-service violations of the critical inspection items and the inspector may affix a CVSA decal to the vehicle. Levels II, III, IV, VII, and VIII do not produce one — either the driver wasn't inspected under the truck, or no vehicle inspection happened at all.
A decal is valid for the month it was issued plus the next two calendar months — never more than three. Pass on May 15 and the decal covers May, June, and July, then expires. It is not a get-out-of-inspection card, but an inspector who sees a current, valid decal will often decline to re-inspect the vehicle and wave it through — which is exactly why a clean Level I is worth chasing.
CVSA, not CFR
The inspection levels, the decal rules, and the Out-of-Service Criteria are CVSA standards — published by the Alliance and revised annually (the OOS criteria re-issue every April 1). They are not part of Title 49. Confirm current details at cvsa.org.
For a small fleet, it’s I, II, or III.
If you run general freight and don't haul radioactive material or passengers, your world is Levels I, II, and III. Level V shows up if FMCSA does a vehicle inspection at your terminal during a review; the others you may never see. Whether you get stopped at all is driven by your CSA profile through the Inspection Selection System — a poor score means more stops, which means more chances for a violation, which worsens the score.
That is the loop worth breaking. The driver side of any inspection is a downstream proof that your driver qualification file, medical certificates, and drug & alcohol program are right; the vehicle side proves your annual periodic inspection under § 396.17 is current — its documentation has to ride in the truck. Get the back office right and the roadside takes care of itself.
An inspection is a snapshot of one truck on one day. The carriers who pass cleanly aren't lucky — they built the file that makes a clean result the only possible outcome.
Make every inspection a formality.
A clean inspection is a downstream proof that your back office is in order. Our specialists build and maintain the driver qualification files, drug & alcohol program, and maintenance records an inspector checks — so the roadside holds no surprises and your CSA score works for you, not against you.
Disclaimer
For informational purposes only — not legal, tax, or regulatory advice. Always verify requirements with FMCSA, your state agency, and qualified compliance professionals. Regulations and fees change; verify current requirements on official .gov sources before filing.