The CVSA Level 1 inspection checklist is a 37-step roadside examination that covers both the driver and every major mechanical system on a commercial motor vehicle. It is the most thorough inspection performed in North America and the one drivers are most likely to encounter. Certified inspectors working for state police, the Department of Transportation, and the Federal Motor Carrier Safety Administration run the procedure using standards written by the Commercial Vehicle Safety Alliance.1Commercial Vehicle Safety Alliance. International Roadcheck Passing comes down to four things: clean driver paperwork, a mechanically sound vehicle, a secure load, and the required emergency gear on board.
Driver Credentials and Documents
The inspection begins at the cab door. Have these ready before the inspector asks:
- A valid Commercial Driver’s License for the class of vehicle you are operating.2eCFR. 49 CFR Part 383 – Commercial Driver’s License Standards; Requirements and Penalties
- A current Medical Examiner’s Certificate.3Federal Motor Carrier Safety Administration. Medical
- Any Skill Performance Evaluation certificate or medical waiver that applies to you.4Commercial Vehicle Safety Alliance. All Inspection Levels
- A current record of duty status. Under 49 CFR 395.8, your log must be up to date through the last change in duty status. Most drivers do this on an Electronic Logging Device. Paper logs are only acceptable under narrow exemptions — short-haul drivers inside a 150 air-mile radius who return within 14 hours, drivers of pre-2000 engine vehicles, and driveaway-towaway operations.5eCFR. 49 CFR 395.8 – Driver’s Record of Duty Status
- The driver vehicle inspection report from the previous day, signed to acknowledge that any listed defects have been repaired.6eCFR. 49 CFR 396.11 – Driver Vehicle Inspection Reports7eCFR. 49 CFR 396.13 – Driver Inspection
The inspector also evaluates you personally. Federal rules require that you can read and speak English well enough to communicate with the public, understand highway signs, respond to official inquiries, and complete required reports.8Federal Motor Carrier Safety Administration. 49 CFR 391.11 – General Qualifications of Drivers Seat belt use, alertness, and any sign of impairment factor into the evaluation. Alcohol or controlled substance violations trigger an immediate 24-hour out-of-service order and civil penalties up to $3,961 for a first offense and at least $7,924 for a repeat.9eCFR. Appendix B to Part 386 – Penalty Schedule
Brakes
Brakes drive more out-of-service orders than any other item. Inspectors measure lining thickness, look for cracked drums and rotors, test the air system for leaks, and verify that tractor protection valves cut air to the trailer if a line ruptures.
The out-of-service rule for brakes is a percentage. If 20 percent or more of the service brakes on the vehicle or combination are defective, the rig cannot move. Multiply the total brakes by 0.20 and round any fraction up. On a typical five-axle tractor-trailer with 10 brakes, two defective brakes is enough. A brake sitting exactly at the adjustment limit is not counted as defective, but one a quarter inch or more past the limit counts as a full defect.10Commercial Vehicle Safety Alliance. North American Standard Out-of-Service Criteria An audible air leak at a chamber or a missing brake on a required axle counts too.
Tires, Wheels, and Suspension
Tread depth is a hard minimum. Front steering-axle tires need at least 4/32 of an inch in any major groove. All other tires need at least 2/32 of an inch. Any tire with exposed belt material, sidewall separation, a cut through to the ply, or an audible leak is an automatic violation.11eCFR. 49 CFR 393.75 – Tires Regrooved or retreaded tires are prohibited on the front axle of a bus and restricted on truck front axles when load ratings exceed 4,920 pounds.
Wheels and rims are checked for cracks, elongated bolt holes, and improper welding. Loose or missing lug nuts can put a vehicle out of service on the spot. Suspension components — leaf springs, airbags, U-bolts, shocks — are examined for cracks, breaks, and leaks.
Steering, Lights, Frame, and Glass
Inspectors measure steering wheel free play, check tie-rod ends and drag links, and look for welds, cracks, and missing hardware on the steering column.
Every required light must work: headlamps, tail lamps, stop lamps, turn signals, and clearance lights. A single burned-out bulb is a recordable violation. Conspicuity tape on the trailer must follow the federal reflective pattern.4Commercial Vehicle Safety Alliance. All Inspection Levels
The frame is inspected for cracked members, loose bolts, and failed welds. The exhaust must be secured and not leaking into the cab or near the fuel system. Fuel tanks need secure mounting and tight caps. Windshield wipers must work, and the windshield cannot have damage that obstructs your view.
Emergency Equipment
Every power unit carries a fire extinguisher with a minimum Underwriters’ Laboratories rating of 5 B:C, or 10 B:C if the load is placarded hazmat. It has to be fully charged, securely mounted, and easy to reach. Inspectors look for the UL label and the charge indicator.12eCFR. 49 CFR 393.95 – Emergency Equipment on All Power Units
You also need warning devices: either three bidirectional reflective triangles meeting Federal Motor Vehicle Safety Standard No. 125, or at least six fusees.12eCFR. 49 CFR 393.95 – Emergency Equipment on All Power Units Missing triangles are one of the easiest violations to avoid and one of the easiest to overlook.
Coupling and Trailer
The tractor-to-trailer connection gets close attention. The fifth-wheel locking jaws must be fully closed around the kingpin with no visible gap, and the fifth wheel itself must be properly lubricated and free of cracks. For non-fifth-wheel configurations, pintle hooks and safety chains are checked for wear and proper attachment. Loose couplings are treated as one of the most dangerous defects on the road.
The trailer’s brakes, tires, lights, and structure are held to the same standards as the tractor. Floors and walls must support the cargo without sagging or cracking, and any hole that could let cargo fall onto the roadway is a violation.
Cargo Securement
Under 49 CFR Part 393, Subpart I, every load has to be immobilized or secured so it cannot shift in transit.13eCFR. 49 CFR Part 393 Subpart I – Protection Against Shifting and Falling Cargo Inspectors verify that tiedowns have adequate working load limits, that none are frayed or broken, and that the load is blocked and braced where needed. Weight distribution across axles is checked against the vehicle’s gross weight ratings. For liquid loads, inspectors look for leaks, unsealed valves, and spills.
If You’re Carrying Hazmat
Hazmat loads bring extra items on top of the 37 steps. The correct placards must show on all four sides of the vehicle; missing placards for multiple divisions within the same hazard class draws an immediate out-of-service order.14Commercial Vehicle Safety Alliance. CVSA’s 2026 Out-of-Service Criteria Now in Effect
Shipping papers have to be within your immediate reach while you are seated and belted. When you are at the controls, they need to be either visible to someone entering the cab or in a holder on the inside of the driver’s door. When you step out, they go in that door holder or on the driver’s seat, and nowhere else. If they sit with other paperwork, the hazmat papers must be tabbed or placed on top.15GovInfo. 49 CFR 177.817 – Shipping Papers
How the Inspection Runs
Plan on 45 to 60 minutes, longer if the inspector finds problems. The sequence usually looks like this: the inspector approaches the cab and interviews you, checking alertness while collecting your documents. Once paperwork is in order, they do a walk-around for obvious exterior defects.
The longest phase happens underneath the vehicle. The inspector goes under on a creeper to examine the chassis, axles, and air lines from below, where oil leaks, cracked lines, and abraded hoses show up clearly. You stay in the cab and follow their commands: apply the service brakes, activate turn signals, pump the pedal to trigger the low-air warning. That back-and-forth confirms the cab-controlled systems respond. After the physical checks, the inspector writes up the results.
Outcomes
The CVSA Decal
If the vehicle has no critical violations, the inspector places a CVSA decal on the lower right corner of the passenger-side windshield of the power unit, or near the front right of a trailing unit.16Commercial Vehicle Safety Alliance. Application of Decals The decal is valid for up to three consecutive months, and vehicles displaying a current one are generally not pulled for re-inspection, though inspectors retain the authority to do so.17Commercial Vehicle Safety Alliance. About Inspection Decals
Out-of-Service Orders
Critical violations put the driver, the vehicle, or both out of service. Nothing moves until the defect is corrected or the condition resolved.18Commercial Vehicle Safety Alliance. Out-of-Service Criteria In practice, that means paying for a mobile mechanic (typically $150 to $250 in service call fees before parts) or a heavy-duty tow ($175 to $400 per hour), on top of the delivery delay.
Fines and CSA Scores
FMCSA can also assess civil penalties. Non-recordkeeping safety violations run up to $19,246 per occurrence. A driver who personally violates safety regulations faces fines up to $4,812. Recordkeeping violations run up to $1,584 per day the violation continues, capping at $15,846, and knowingly falsifying a record jumps the maximum to $15,846 in a single shot.9eCFR. Appendix B to Part 386 – Penalty Schedule
Every violation from a Level 1 inspection also feeds the carrier’s CSA score through FMCSA’s Safety Measurement System. Violations are weighted by severity, and recent ones count more heavily than older ones within the 24-month analysis window.19Federal Motor Carrier Safety Administration. Safety Measurement System Methodology Enough weighted violations in a category like Vehicle Maintenance or HOS Compliance can push a carrier past intervention thresholds and trigger warning letters, targeted inspections, or a federal compliance review.
Disputing an Inspection Through DataQs
If you believe an inspection report contains an error, you can challenge it through FMCSA’s DataQs system at dataqs.fmcsa.dot.gov.20Federal Motor Carrier Safety Administration. FMCSA DataQs A Request for Data Review has to be filed within three years of the inspection date.21Federal Motor Carrier Safety Administration. FMCSA Upgrades DataQs Program to Improve Efficiency and Transparency for Safety Record Corrections for American Truckers
As of 2026, the review runs in three independent stages. The initial review must be completed within 21 days and cannot be decided by the officer who issued the original finding. If you disagree with the outcome, a reconsideration stage handled by subject matter experts uninvolved in the first decision also has to wrap within 21 days. A final review by a senior decision-maker or independent panel follows if needed, with a 45-day deadline.21Federal Motor Carrier Safety Administration. FMCSA Upgrades DataQs Program to Improve Efficiency and Transparency for Safety Record Corrections for American Truckers A successful challenge removes the violation from the carrier’s CSA profile, which is worth the effort when a single inspection is dragging a score toward an intervention threshold.