Equipment unit · VIN-decoded · NHTSA vPIC

2020 Polar Tank Trailer

3H6KL4320L3109253 · Trailer · TRAILER
Carriers run under3
36 mo
Inspections3
all-time
OOS inspections0
of 3
First seenSep 22, 2023
AZ
Last seenSep 21, 2026
CA
Inspected under 3 different carriers in 36 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
3H6KL4320L3109253
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2020
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Sep 16, 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
3H6

Deterministic · VIN positions 1–3.

Vehicle descriptor section
KL432

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

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
109253

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 · Sep 22, 2023 – Sep 21, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 21, 2026CAIII · Driver-only3—L AND J TRUCKING LLC 346302973A8WE/AZ
Apr 21, 2024CAII · Walk-around0—INFINITY TRANSIT LLC 252391573A8WE/AZ
Sep 22, 2023AZIII · Driver-only0—FLAT-LINE XPRESS LLC 347318873A8WE/AZ
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
L AND J TRUCKING LLC3463029Sep 21, 2026Sep 21, 20261CA
INFINITY TRANSIT LLC2523915Apr 21, 2024Apr 21, 20241CA
FLAT-LINE XPRESS LLC3473188Sep 22, 2023Sep 22, 20231AZ
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.
73A8WEAZ2L AND J TRUCKING LLCSep 21, 2026 → Sep 21, 20261
73A8WEAZ—INFINITY TRANSIT LLCApr 21, 2024 → Apr 21, 20241
73A8WEAZ—FLAT-LINE XPRESS LLCSep 22, 2023 → Sep 22, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Sep 16, 2026