DOT Inspection Levels 1-6: What Happens at Each Level

Roadside inspections are conducted by CVSA (Commercial Vehicle Safety Alliance)-certified inspectors at weigh stations, ports of entry, and roadside checkpoints. There are six standardized inspection levels, each with a different scope and depth. Understanding what happens at each level helps drivers prepare and helps fleet managers focus their compliance efforts on the areas that matter most.

Level I — North American Standard Inspection (Full Inspection)

This is the most comprehensive roadside inspection. It includes a complete examination of both the driver and the vehicle. The inspector reviews the driver's credentials (CDL, medical certificate, HOS records, and ELD compliance), then performs a thorough under-vehicle inspection including brakes, steering, suspension, frame, tires, wheels, exhaust, and coupling devices. A Level I inspection takes 45 to 60 minutes and the vehicle must be stopped. This is the inspection level that generates the most OOS orders because every system is checked. Approximately 30% of all roadside inspections are Level I.

Level II — Walk-Around Driver/Vehicle Inspection

A Level II inspection covers the same driver-related items as Level I, but the vehicle examination is limited to what can be seen during a walk-around without getting under the vehicle. The inspector checks items visible from outside: tires, wheels, body condition, lights, reflectors, cargo securement, fuel system integrity, and coupling devices. It does not include brake measurements or under-chassis inspection. This is the most common inspection type, accounting for roughly 50% of all inspections.

Level III — Driver-Only Inspection

This level focuses entirely on the driver. No vehicle components are inspected. The inspector reviews the CDL and any endorsements, medical examiner's certificate, HOS records and ELD data, seatbelt usage, alcohol and controlled substances, and driver vehicle inspection report (DVIR). Level III inspections are common at weigh stations that have high traffic volume, where time does not allow a full vehicle inspection.

Level IV — Special Inspection

Level IV is a one-time examination of a specific item. These are often used during targeted enforcement campaigns, such as brake safety weeks or cargo securement blitzes, where inspectors focus on a single safety area. For example, during Brake Safety Week, inspectors may perform Level IV brake-only inspections on a large number of vehicles to collect enforcement data. Level IV inspections produce violation data but are not as comprehensive as Levels I or II.

Level V — Vehicle-Only Inspection (Without Driver Present)

A Level V inspection is a complete vehicle inspection conducted at a location where the driver is not present, such as a carrier's terminal or maintenance facility. It covers all the vehicle components from a Level I inspection. These are typically done as part of a carrier investigation or compliance review, not at random roadside stops. They are relatively rare and account for a small percentage of total inspections.

Level VI — Enhanced NAS Inspection for Radioactive Materials

Level VI is the most specialized inspection level, reserved for vehicles transporting select radioactive materials. It includes everything in a Level I inspection plus additional steps: verification of proper packaging, labeling, and placarding of radioactive cargo; radiation monitoring using survey instruments; verification of shipping papers and emergency response documentation; and confirmation that the driver has the required hazmat endorsement and training. These inspections are performed by specially trained inspectors.

How Inspections Affect Your Record

All inspection results are reported to the FMCSA and become part of your carrier's permanent record. Violations from inspections feed into your BASICs scores, and OOS orders affect your OOS rates. Clean inspections also matter — they demonstrate a pattern of compliance and can offset violations in your safety profile. You can review your complete inspection history on Carrier Lookup.

Review Your Inspection History

Look up any carrier's full inspection record including all violations and OOS orders.

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