Methodology & data sources
TruckWhere uses only free, official public data and is explicit about how it joins and interprets it.
Data sources: NHTSA vPIC (queried live) and FMCSA public inspection records (bulk-refreshed monthly · last refreshed July 1, 2026).
Quick answer
TruckWhere decodes VINs with NHTSA vPIC and summarizes available FMCSA public roadside inspection records tied to exact 17-character VIN matches. It attributes a violation to the searched VIN only when the inspection ID and unit number match the unit that VIN occupied. It is not a title, lien, auction, insurance-claim, ownership, or complete odometer-history report.
Data sources used by TruckWhere
| Source | Used for |
|---|---|
| NHTSA vPIC | VIN decode: make, model, model year, body class, GVWR, engine, and manufacturer details. |
| FMCSA Inspection data (SAFER / A&I) | Roadside inspection records. |
| FMCSA Inspections Per Unit | VIN, unit number, plate state, and carrier/USDOT association. |
| FMCSA Violations | Violation code, description, OOS status, and unit-level attribution. |
| FMCSA Company Snapshot / Census (SAFER) | Carrier legal name, DBA, USDOT number, fleet size, crash summary, and safety rating where available. |
TruckWhere uses exact 17-character VIN matching only — no fuzzy matching, no silent VIN correction, and no assumption that a carrier observed operating a VIN legally owned the truck.
What TruckWhere is — and is not
Is: a commercial truck VIN and DOT roadside-history tool. It decodes VINs and summarizes available public roadside inspection records tied to exact 17-character VIN matches.
Is not: a title-history report, lien search, insurance-claim report, auction-history report, legal ownership report, or complete odometer-history report.
Unit-specific violation attribution
A single roadside inspection can include multiple units — for example a tractor and a trailer. Violations are recorded per unit. We attribute a violation to the searched VIN only when the violation's inspection ID and unit number match a unit that the VIN actually occupied. We never assign a trailer's defect to the tractor, or vice versa.
VIN matching
- VINs are normalized to uppercase with spaces and punctuation removed.
- Only exact 17-character VINs are accepted; I, O, and Q are rejected.
- We use exact VIN matches only — no fuzzy matching, and we never silently correct a VIN.
Limitations
- This is not a complete title, lien, odometer, auction, ownership, or insurance-claim history.
- FMCSA records identify roadside inspection and carrier associations, not legal ownership.
- No matching record does not mean clean history. It means no exact VIN match was found in the available roadside data.
- Carrier association does not prove ownership.
- Historical violations do not prove current defects.
Further reading
TruckWhere is the commercial-truck sister product of CarWhere. For a broader overview of checking a commercial truck by VIN, see CarWhere's commercial truck VIN check guide.