Equipment unit · VIN-decoded · NHTSA vPIC

1PMS44227X1021480

Not yet decoded
Carriers run under2
20 mo
Inspections2
all-time
OOS inspections0
of 2
First seenSep 19, 2023
WY
Last seenMay 2, 2025
OK
Inspected under 2 different carriers in 20 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

This VIN has not been decoded yet — the unit's carrier, inspection and plate history below is reconstructed from the FMCSA inspection feed regardless.

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
S4422

Deterministic · VIN positions 4–8.

Check digit
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
1999 or 2029

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

North American serial sequence
021480

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 · 33 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 33 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.

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 · Sep 19, 2023 – May 2, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
May 2, 2025OKII · Walk-around1BED ROCK INC 1007292T44E3M/NJ
Sep 19, 2023WYII · Walk-around1S-J TRANSPORTATION COMPANY INC 154323T44E3M/NJ
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BED ROCK INC1007292May 2, 2025May 2, 20251MO
S-J TRANSPORTATION COMPANY INC154323Sep 19, 2023Sep 19, 20231NJ
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.
T44E3MNJ2BED ROCK INCMay 2, 2025May 2, 20251
T44E3MNJ2S-J TRANSPORTATION COMPANY INCSep 19, 2023Sep 19, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC