Equipment unit · VIN-decoded · NHTSA vPIC

2022 Polar Tank Trailer

3H6KF4325N3115785 · Trailer · TRAILER
Carriers run under2
14 mo
Inspections7
all-time
OOS inspections1
of 7
First seenMay 19, 2025
NM
Last seenJul 28, 2026
CO
Inspected under 2 different carriers in 14 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
3H6KF4325N3115785
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2022
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 24, 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
KF432

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
1992 or 2022

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

North American serial sequence
115785

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 · 415 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 415 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
2022

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 · May 19, 2025 – Jul 28, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 28, 2026COI · Full3SPECIALIZED WASTE SOLUTIONS INC 315365023.2666F/ME
Jun 10, 2026WYII · Walk-around0SPECIALIZED WASTE SOLUTIONS INC 3153650232666F/ME
Feb 24, 2026AZII · Walk-around3OOSSPECIALIZED WASTE SOLUTIONS INC 3153650232666F/ME
Nov 19, 2025NMII · Walk-around1TRANSCO LEASING CO INC 594129232666F/ME
Oct 20, 2025NMII · Walk-around0SPECIALIZED WASTE SOLUTIONS INC 3153650232666F/ME
Oct 13, 2025NMII · Walk-around0SPECIALIZED WASTE SOLUTIONS INC 3153650232666F/ME
May 19, 2025NMII · Walk-around1SPECIALIZED WASTE SOLUTIONS INC 3153650232666F/ME
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SPECIALIZED WASTE SOLUTIONS INC3153650May 19, 2025Jul 28, 20266CA
TRANSCO LEASING CO INC594129Nov 19, 2025Nov 19, 20251OR
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.
23.2666FME2SPECIALIZED WASTE SOLUTIONS INCJul 28, 2026Jul 28, 20261
232666FMESPECIALIZED WASTE SOLUTIONS INCMay 19, 2025Jun 10, 20265
232666FMETRANSCO LEASING CO INCNov 19, 2025Nov 19, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026