What Is an Out-of-Service Violation?
Last updated: June 2026 · Data sources: NHTSA vPIC (live) and FMCSA public inspection records (periodic refresh).
Quick answer
An out-of-service violation is a serious driver or vehicle condition found during a roadside inspection that prevents the driver or vehicle from continuing until the condition is corrected. In a used-truck VIN report, an old OOS event does not prove the defect still exists, but it is a strong signal to verify repair records and current condition.
What it means for a buyer
- The truck had a serious enough condition to be stopped at least once.
- Ask for the roadside inspection report and the repair invoice for that event.
- Pay special attention if OOS events repeat in the same system (e.g., brakes).
What it does not mean
- It does not prove the defect is still present today.
- It does not mean the truck is unsafe now — but it tells you exactly what to check.
How TruckWhere uses this
TruckWhere flags out-of-service events for the exact VIN, explains what was cited in plain English, and generates a dated seller question requesting the repair documentation.
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Frequently asked questions
- Does an out-of-service event stay on the record?
- The historical roadside inspection record reflects what happened at that time. A later inspection without that issue suggests it was addressed, but you should confirm with repair documentation.