Equipment unit · VIN-decoded · NHTSA vPIC

2024 Polar Tank Trailer

3H6KA4425R3131973 · Trailer · TRAILER
Carriers run under1
23 mo
Inspections11
all-time
OOS inspections5
of 11
First seenJul 7, 2024
IA
Last seenJun 15, 2026
NE
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
3H6KA4425R3131973
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2024
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 16, 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
3H6

Deterministic · VIN positions 1–3.

Vehicle descriptor section
KA442

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
1994 or 2024

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

North American serial sequence
131973

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
POLAR TANK TRAILER

Prefix basis · 84 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 84 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
2024

Observed directly for this VIN via NHTSA vPIC.

Observed make
POLAR TANK TRAILER

Observed directly for this VIN via NHTSA vPIC.

Observed model
Polar Tank Trailer

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 · Jul 7, 2024 – Jun 15, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 15, 2026NEIII · Driver-only0C H WILSON TRANSPORT INC 98221FY1260/IA
Jun 5, 2026NEIII · Driver-only0C H WILSON TRANSPORT INC 98221FY1260/IA
May 19, 2026IAII · Walk-around3OOSC H WILSON TRANSPORT INC 98221FY1260/IA
Dec 10, 2024NEI · Full3C H WILSON TRANSPORT INC 98221FY1260/IA
Dec 3, 2024NEIII · Driver-only0C H WILSON TRANSPORT INC 98221FY1260/IA
Nov 12, 2024NEII · Walk-around1OOSC H WILSON TRANSPORT INC 98221FY1260/IA
Oct 31, 2024NEI · Full8OOSC H WILSON TRANSPORT INC 98221FY1260/IA
Sep 9, 2024NEI · Full4OOSC H WILSON TRANSPORT INC 98221FY1260/IA
Jul 24, 2024SDII · Walk-around0C H WILSON TRANSPORT INC 98221FY1260/IA
Jul 14, 2024IAI · Full2OOSC H WILSON TRANSPORT INC 98221FY1260/IA
Jul 7, 2024IAI · Full1C H WILSON TRANSPORT INC 98221FY1260/IA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
C H WILSON TRANSPORT INC98221Jul 7, 2024Jun 15, 202611IA
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.
FY1260IA2C H WILSON TRANSPORT INCJul 7, 2024Jun 15, 202611
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026