Equipment unit · VIN-decoded · NHTSA vPIC

1990 Polar Tank Trailer

1PMA24426L1010379 · Trailer · TRAILER
Carriers run under1
29 mo
Inspections13
all-time
OOS inspections4
of 13
First seenAug 8, 2023
CA
Last seenJan 6, 2026
CA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1PMA24426L1010379
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
1990
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 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
1PM

Deterministic · VIN positions 1–3.

Vehicle descriptor section
A2442

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

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
010379

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 · 1,078 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 1,078 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
1990

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 · Aug 8, 2023 – Jan 6, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 6, 2026CAII · Walk-around6OOSPETROLEUM UNLIMITED INC 31811304UN6141/CA
Dec 28, 2025CAII · Walk-around0PETROLEUM UNLIMITED INC 31811304UN6141/CA
Nov 19, 2025CAI · Full2OOSPETROLEUM UNLIMITED INC 31811304UN6141/CA
Oct 25, 2025CAIII · Driver-only0PETROLEUM UNLIMITED INC 31811304UN6141/CA
Sep 19, 2025CAII · Walk-around1PETROLEUM UNLIMITED INC 31811304UN6141/CA
Apr 11, 2025CAV · Vehicle-only1PETROLEUM UNLIMITED INC 31811304UN6141/CA
Jul 7, 2024CAII · Walk-around3PETROLEUM UNLIMITED INC 31811304UN6141/CA
Apr 20, 2024CAI · Full5OOSPETROLEUM UNLIMITED INC 31811304UN6141/CA
Mar 19, 2024CAI · Full0PETROLEUM UNLIMITED INC 31811304UN6141/CA
Mar 18, 2024CAI · Full4OOSPETROLEUM UNLIMITED INC 31811304UN6141/CA
Nov 15, 2023CAV · Vehicle-only0PETROLEUM UNLIMITED INC 31811304UN6141/CA
Sep 4, 2023CAII · Walk-around0PETROLEUM UNLIMITED INC 31811304UN6141/CA
Aug 8, 2023CAII · Walk-around4PETROLEUM UNLIMITED INC 31811304UN6141/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
PETROLEUM UNLIMITED INC3181130Aug 8, 2023Jan 6, 202613CA
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.
4UN6141CAPETROLEUM UNLIMITED INCAug 8, 2023Jan 6, 202613
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026