Equipment unit · VIN-decoded · NHTSA vPIC

3H6KF4329L3104561

Not yet decoded
Carriers run under2
14 mo
Inspections2
all-time
OOS inspections0
of 2
First seenApr 14, 2025
CA
Last seenJun 1, 2026
CA
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

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
3H6

Deterministic · VIN positions 1–3.

Vehicle descriptor section
KF432

Deterministic · VIN positions 4–8.

Check digit
9 · valid

Deterministic · position 9; calculated value 9.

Model year candidates
1990 or 2020

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

North American serial sequence
104561

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.

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 14, 2025 – Jun 1, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 1, 2026CAIII · Driver-only2TRIMAC TRANSPORTATION INC 36431T564790/IL
Apr 14, 2025CAV · Vehicle-only2TRIMAC TRANSPORTATION SERVICES WESTERN INC 256308T564790/IL
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TRIMAC TRANSPORTATION INC36431Jun 1, 2026Jun 1, 20261TX
TRIMAC TRANSPORTATION SERVICES WESTERN INC256308Apr 14, 2025Apr 14, 20251TX
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.
T564790ILTRIMAC TRANSPORTATION INCJun 1, 2026Jun 1, 20261
T564790ILTRIMAC TRANSPORTATION SERVICES WESTERN INCApr 14, 2025Apr 14, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC