Equipment unit · VIN-decoded · NHTSA vPIC

1996 Polar Tank Trailer

1PMS34225T1016520 · Trailer · TRAILER
Carriers run under3
34 mo
Inspections3
all-time
OOS inspections1
of 3
First seenJun 27, 2023
NV
Last seenApr 9, 2026
WA
Inspected under 3 different carriers in 34 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
1PMS34225T1016520
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
1996
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
1PM

Deterministic · VIN positions 1–3.

Vehicle descriptor section
S3422

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
1996 or 2026

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

North American serial sequence
016520

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 · 246 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 246 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
1996

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 · Jun 27, 2023 – Apr 9, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 9, 2026WAI · Full4OOSLIGHT SQUARE TRANSPORTATION LLC 17987564TL2594/CA
Jul 30, 2024CAI · Full0CHATO TRUCKING LLC 39933874TL2594/CA
Jun 27, 2023NVII · Walk-around0CHEMICAL TRANSFER COMPANY 2693724TL2594/CA
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
LIGHT SQUARE TRANSPORTATION LLC1798756Apr 9, 2026Apr 9, 20261CA
CHATO TRUCKING LLC3993387Jul 30, 2024Jul 30, 20241CA
CHEMICAL TRANSFER COMPANY269372Jun 27, 2023Jun 27, 20231CA
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.
4TL2594CALIGHT SQUARE TRANSPORTATION LLCApr 9, 2026Apr 9, 20261
4TL2594CACHATO TRUCKING LLCJul 30, 2024Jul 30, 20241
4TL2594CA2CHEMICAL TRANSFER COMPANYJun 27, 2023Jun 27, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 26, 2026