Equipment unit · VIN-decoded · NHTSA vPIC

2018 Polar Tank Trailer

1PMS22621J8015838 · TRAILER
Carriers run under1
32 mo
Inspections17
all-time
OOS inspections1
of 17
First seenJul 10, 2023
CA
Last seenMar 23, 2026
CA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1PMS22621J8015838
Make
Polar Tank Trailer
Model
Not decoded
Model year
2018
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 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
S2262

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1988 or 2018

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

North American serial sequence
015838

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.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

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
2018

Observed directly for this VIN via NHTSA vPIC.

Observed make
POLAR TANK TRAILER

Observed directly for this VIN via NHTSA vPIC.

Observed model
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Not established

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

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jul 10, 2023 – Mar 23, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 23, 2026CAI · Full1ALLIANCE TANK LINES INC 16608934RR3024/CA
Jul 28, 2025CAI · Full0ALLIANCE TANK LINES INC 16608934RR3024/CA
May 28, 2025CAII · Walk-around1ALLIANCE TANK LINES INC 16608934RR3024/CA
Mar 26, 2025CAII · Walk-around0ALLIANCE TANK LINES INC 16608934RR3024/CA
Jan 14, 2025CAIII · Driver-only0ALLIANCE TANK LINES INC 16608934RR3024/CA
Jan 12, 2025CAI · Full3ALLIANCE TANK LINES INC 16608934RR3024/CA
Jan 11, 2025CAIII · Driver-only0ALLIANCE TANK LINES INC 16608934RR3024/CA
Dec 5, 2024CAII · Walk-around1ALLIANCE TANK LINES INC 1660893R443024/CA
May 1, 2024CAI · Full0ALLIANCE TANK LINES INC 16608934RR3024/CA
Mar 24, 2024CAIII · Driver-only0ALLIANCE TANK LINES INC 16608934RR3024/CA
Jan 17, 2024CAIII · Driver-only1OOSALLIANCE TANK LINES INC 16608934RR3024/CA
Jan 17, 2024CAV · Vehicle-only0ALLIANCE TANK LINES INC 16608934RR3024/CA
Nov 19, 2023CAIII · Driver-only0ALLIANCE TANK LINES INC 16608934RR3024/CA
Sep 17, 2023CAIII · Driver-only0ALLIANCE TANK LINES INC 16608934RR3024/CA
Sep 10, 2023CAIII · Driver-only0ALLIANCE TANK LINES INC 16608934RR3024/CA
Jul 12, 2023CAII · Walk-around4ALLIANCE TANK LINES INC 16608934RR3024/CA
Jul 10, 2023CAIII · Driver-only1ALLIANCE TANK LINES INC 16608934RR3024/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ALLIANCE TANK LINES INC1660893Jul 10, 2023Mar 23, 202617CA
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.
4RR3024CAALLIANCE TANK LINES INCJul 10, 2023Mar 23, 202616
R443024CAALLIANCE TANK LINES INCDec 5, 2024Dec 5, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 16, 2026