Equipment unit · VIN-decoded · NHTSA vPIC

3H6KL4322R3165655

Not yet decoded
Carriers run under2
13 mo
Inspections2
all-time
OOS inspections0
of 2
First seenMar 26, 2025
AZ
Last seenApr 9, 2026
NM
Inspected under 2 different carriers in 13 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
KL432

Deterministic · VIN positions 4–8.

Check digit
2 · valid

Deterministic · position 9; calculated value 2.

Model year candidates
1994 or 2024

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

North American serial sequence
165655

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 · 70 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 70 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 · Mar 26, 2025 – Apr 9, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 9, 2026NMII · Walk-around0HAULING AZZ TRANSPORTATION SERVICES LLC 3833199H8A6HS/AZ
Mar 26, 2025AZII · Walk-around1D & L TRUCKING LLC 2802002H8A6HS/AZ
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HAULING AZZ TRANSPORTATION SERVICES LLC3833199Apr 9, 2026Apr 9, 20261AZ
D & L TRUCKING LLC2802002Mar 26, 2025Mar 26, 20251AZ
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.
H8A6HSAZHAULING AZZ TRANSPORTATION SERVICES LLCApr 9, 2026Apr 9, 20261
H8A6HSAZD & L TRUCKING LLCMar 26, 2025Mar 26, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC