Equipment unit · VIN-decoded · NHTSA vPIC

1PMKR4329S1130791

Not yet decoded
Carriers run under2
22 mo
Inspections2
all-time
OOS inspections1
of 2
First seenApr 6, 2024
MN
Last seenFeb 21, 2026
VA
Inspected under 2 different carriers in 22 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
KR432

Deterministic · VIN positions 4–8.

Check digit
9 · valid

Deterministic · position 9; calculated value 9.

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
130791

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 · 159 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 159 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 · Apr 6, 2024 – Feb 21, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 21, 2026VAII · Walk-around1SWANN FAMILY TRUCKING LLC 6920275465448/ME
Apr 6, 2024MNIII · Driver-only3OOSB AND M FAMILY TRUCKING LLC 101181829602917/NC
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SWANN FAMILY TRUCKING LLC692027Feb 21, 2026Feb 21, 20261VA
B AND M FAMILY TRUCKING LLC1011818Apr 6, 2024Apr 6, 20241VA
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.
5465448MESWANN FAMILY TRUCKING LLCFeb 21, 2026Feb 21, 20261
29602917NCB AND M FAMILY TRUCKING LLCApr 6, 2024Apr 6, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC