Equipment unit · NHTSA vPIC identity

2015 Polar Tank Trailer

1PMS44321F1044511 · Trailer · TRAILER
Carriers run under2
15 mo
Inspections3
all-time
OOS inspections2
of 3
First seenAug 6, 2024
AL
Last seenNov 24, 2025
TN
Inspected under 2 different carriers in 15 months
These observations show where this VIN appeared, not who owned the vehicle. Sales, leases or owner-operator moves may explain carrier changes. A shared VIN alone is not a fraud finding. Compare dates and sources in the timeline below.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1PMS44321F1044511
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2015
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 26, 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
1PM

Deterministic · VIN positions 1–3.

Vehicle descriptor section
S4432

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1985 or 2015

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

North American serial sequence
044511

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 · 39 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 39 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 · Aug 6, 2024 – Nov 24, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 24, 2025TNI · Full1OOSACTION ENVIRONMENTAL LLC 1028827A044726/AL
Sep 23, 2024TNI · Full1OOSACTION RESOURCES LLC 680185A044726/AL
Aug 6, 2024ALIII · Driver-only0—ACTION ENVIRONMENTAL LLC 1028827A044726/AL
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ACTION ENVIRONMENTAL LLC1028827Aug 6, 2024Nov 24, 20252AL
ACTION RESOURCES LLC680185Sep 23, 2024Sep 23, 20241AL
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.
A044726AL—ACTION ENVIRONMENTAL LLCAug 6, 2024 → Nov 24, 20252
A044726AL2ACTION RESOURCES LLCSep 23, 2024 → Sep 23, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 26, 2026