Equipment unit · VIN-decoded · NHTSA vPIC

2013 Polar Tank Trailer

1PMA24433D5012108 · Trailer · TRAILER
Carriers run under2
29 mo
Inspections4
all-time
OOS inspections2
of 4
First seenJun 21, 2023
MA
Last seenNov 11, 2025
MA
Inspected under 2 different carriers in 29 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
1PMA24433D5012108
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2013
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 7, 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
A2443

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
1983 or 2013

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

North American serial sequence
012108

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 · 15 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 15 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.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2013

Observed directly for this VIN via NHTSA vPIC.

Observed make
POLAR TANK TRAILER

Observed directly for this VIN via NHTSA vPIC.

Observed model
Polar Tank Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

Observed directly for this VIN via NHTSA vPIC.

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 · Jun 21, 2023 – Nov 11, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 11, 2025MAII · Walk-around4OOSBROWN BEAR TRANSPORTATION LLC 29175323232139/ME
Jul 16, 2025NYI · Full6OOSBROWN BEAR TRANSPORTATION LLC 29175323232139/ME
May 16, 2024VTII · Walk-around2PS MARSTON ASSOCIATES LLC 2749043232139/ME
Jun 21, 2023MAII · Walk-around2BROWN BEAR TRANSPORTATION LLC 29175323232139/ME
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BROWN BEAR TRANSPORTATION LLC2917532Jun 21, 2023Nov 11, 20253MA
PS MARSTON ASSOCIATES LLC274904May 16, 2024May 16, 20241NH
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.
3232139MEBROWN BEAR TRANSPORTATION LLCJun 21, 2023Nov 11, 20253
3232139ME2PS MARSTON ASSOCIATES LLCMay 16, 2024May 16, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 7, 2026