Equipment unit · VIN-decoded · NHTSA vPIC

2023 Polar Tank Trailer

1PMKA442XP7118661 · Trailer · TRAILER
Carriers run under1
32 mo
Inspections13
all-time
OOS inspections0
of 13
First seenOct 17, 2023
NV
Last seenJun 12, 2026
UT
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1PMKA442XP7118661
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2023
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
KA442

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
1993 or 2023

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

North American serial sequence
118661

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 · 387 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 387 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
2023

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 · Oct 17, 2023 – Jun 12, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 12, 2026UTI · Full2WILLIAMS TANK LINES LLC 2290474UV7207/CA
Feb 24, 2026NVII · Walk-around2WILLIAMS TANK LINES LLC 2290474UV7207/CA
Feb 3, 2026NVII · Walk-around0WILLIAMS TANK LINES LLC 2290474UV7207/CA
Nov 27, 2025CAII · Walk-around0WILLIAMS TANK LINES LLC 2290474UV7207/CA
Oct 21, 2025NVII · Walk-around0WILLIAMS TANK LINES LLC 2290474UV7207/CA
Oct 6, 2025CAII · Walk-around1WILLIAMS TANK LINES LLC 2290474UV7207/CA
Oct 9, 2024NVII · Walk-around0WILLIAMS TANK LINES LLC 2290474UV7207/CA
Oct 3, 2024NVII · Walk-around0WILLIAMS TANK LINES LLC 2290474UV7207/CA
Sep 20, 2024AZII · Walk-around0WILLIAMS TANK LINES LLC 2290474UV7207/CA
Apr 29, 2024CAII · Walk-around0WILLIAMS TANK LINES LLC 2290474UV7207/CA
Dec 19, 2023CAI · Full0WILLIAMS TANK LINES LLC 2290474UV7207/CA
Oct 24, 2023CAII · Walk-around1WILLIAMS TANK LINES LLC 2290474UV7207/CA
Oct 17, 2023NVII · Walk-around0WILLIAMS TANK LINES LLC 2290474UV7207/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
WILLIAMS TANK LINES LLC229047Oct 17, 2023Jun 12, 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.
4UV7207CAWILLIAMS TANK LINES LLCOct 17, 2023Jun 12, 202613
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026