Equipment unit · VIN-decoded · NHTSA vPIC

2013 Wilson Trailer Co.

4WW5512A8D6620602 · TRAILER
Carriers run under2
35 mo
Inspections5
all-time
OOS inspections0
of 5
First seenJul 20, 2023
CA
Last seenJun 24, 2026
CO
Inspected under 2 different carriers in 35 months
A unit that bounces between many operators can indicate slip-seating, heavy sub-haul, or double-brokering. Review the carrier timeline below for load integrity — context for human judgment, not a verdict.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
4WW5512A8D6620602
Make
Wilson Trailer Co.
Model
Not decoded
Model year
2013
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 13, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
4WW

Deterministic · VIN positions 1–3.

Vehicle descriptor section
5512A

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1983 or 2013

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
620602

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2013

Observed directly for this VIN via NHTSA vPIC.

Observed make
WILSON TRAILER CO.

Observed directly for this VIN via NHTSA vPIC.

Observed model
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

Observed directly for this VIN via NHTSA vPIC.

Not established

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jul 20, 2023 – Jun 24, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 24, 2026COIII · Driver-only0TOP FLEET TRANSPORT LTD 379882757552L/BC
Feb 11, 2026WAIII · Driver-only0TOP FLEET TRANSPORT LTD 379882788924K/BC
Sep 25, 2025MTIII · Driver-only0BEST SOURCE TRANSPORT LTD 300984888924K/BC
Nov 20, 2023WAIII · Driver-only1TOP FLEET TRANSPORT LTD 379882722738K/BC
Jul 20, 2023CAI · Full1TOP FLEET TRANSPORT LTD 379882722738K/BC
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TOP FLEET TRANSPORT LTD3798827Jul 20, 2023Jun 24, 20264BC
BEST SOURCE TRANSPORT LTD3009848Sep 25, 2025Sep 25, 20251BC
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
57552LBC2TOP FLEET TRANSPORT LTDJun 24, 2026Jun 24, 20261
88924KBCTOP FLEET TRANSPORT LTDFeb 11, 2026Feb 11, 20261
88924KBCBEST SOURCE TRANSPORT LTDSep 25, 2025Sep 25, 20251
22738KBCTOP FLEET TRANSPORT LTDJul 20, 2023Nov 20, 20232
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 13, 2026