Equipment unit · VIN-decoded · NHTSA vPIC

2016 Polar Tank Trailer

1PMA24524G5014718 · TRAILER
Carriers run under1
16 mo
Inspections4
all-time
OOS inspections0
of 4
First seenApr 23, 2024
IL
Last seenAug 17, 2025
IA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1PMA24524G5014718
Make
Polar Tank Trailer
Model
Not decoded
Model year
2016
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 25, 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
A2452

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1986 or 2016

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

North American serial sequence
014718

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 · 131 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 131 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
2016

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

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Apr 23, 2024 – Aug 17, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 17, 2025IAII · Walk-around2ROBERTSON-WILLIAMS TRANSPORT LLC 208809841L8YG/MO
Aug 10, 2025ILII · Walk-around1ROBERTSON-WILLIAMS TRANSPORT LLC 208809841L8VG/MO
Jan 16, 2025ILIII · Driver-only0ROBERTSON-WILLIAMS TRANSPORT LLC 208809841L8V6/MO
Apr 23, 2024ILIII · Driver-only0ROBERTSON-WILLIAMS TRANSPORT LLC 208809841L8VG/MO
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROBERTSON-WILLIAMS TRANSPORT LLC2088098Apr 23, 2024Aug 17, 20254MO
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.
41L8YGMOROBERTSON-WILLIAMS TRANSPORT LLCAug 17, 2025Aug 17, 20251
41L8VGMOROBERTSON-WILLIAMS TRANSPORT LLCApr 23, 2024Aug 10, 20252
41L8V6MOROBERTSON-WILLIAMS TRANSPORT LLCJan 16, 2025Jan 16, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 25, 2026