Equipment unit · VIN-decoded · NHTSA vPIC

1995 Wilson Trailer Co.

1W1MAFYW3SA221220 · Trailer · TRAILER
Carriers run under2
13 mo
Inspections3
all-time
OOS inspections0
of 3
First seenJan 5, 2024
IL
Last seenFeb 24, 2025
IL
Inspected under 2 different carriers in 13 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
1W1MAFYW3SA221220
Make
Wilson Trailer Co.
Model
Wilson Trailer Co.
Model year
1995
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 26, 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
1W1

Deterministic · VIN positions 1–3.

Vehicle descriptor section
MAFYW

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
1995 or 2025

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

North American serial sequence
221220

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.

Make
WILSON TRAILER CO.

Prefix basis · 15 decoded VINs at 100.0% prefix purity.

Model
Wilson Trailer Co.

Prefix basis · 15 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

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
1995

Observed directly for this VIN via NHTSA vPIC.

Observed make
WILSON TRAILER CO.

Observed directly for this VIN via NHTSA vPIC.

Observed model
Wilson Trailer Co.

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

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

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jan 5, 2024 – Feb 24, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 24, 2025ILIII · Driver-only0GOO'S TRUCKING LLC 4120627941687ST/IL
Oct 2, 2024ILII · Walk-around0BIG DOGG TRUCKING INC 4128951890880ST/IL
Jan 5, 2024ILIII · Driver-only3BIG DOGG TRUCKING INC 4128951890880ST/IL
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
GOO'S TRUCKING LLC4120627Feb 24, 2025Feb 24, 20251IL
BIG DOGG TRUCKING INC4128951Jan 5, 2024Oct 2, 20242IL
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.
941687STILGOO'S TRUCKING LLCFeb 24, 2025Feb 24, 20251
890880STILBIG DOGG TRUCKING INCJan 5, 2024Oct 2, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 26, 2026