Equipment unit · VIN-decoded · NHTSA vPIC

1998 Polar Tank Trailer

1PMS14425W1020042 · Trailer · TRAILER
Carriers run under2
36 mo
Inspections2
all-time
OOS inspections1
of 2
First seenJul 31, 2023
PA
Last seenJul 30, 2026
TN
Inspected under 2 different carriers in 36 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
1PMS14425W1020042
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
1998
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 29, 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
S1442

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
1998 or 2028

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

North American serial sequence
020042

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 · 24 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 24 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
1998

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 · Jul 31, 2023 – Jul 30, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 30, 2026TNI · Full4OOSSTRAITLINE TRANSPORTATION LLC 988981KT6774/IA
Jul 31, 2023PAIII · Driver-only0H FRED BAREFOOT TRUCKING INC 295923PT9980P/PA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
STRAITLINE TRANSPORTATION LLC988981Jul 30, 2026Jul 30, 20261IA
H FRED BAREFOOT TRUCKING INC295923Jul 31, 2023Jul 31, 20231PA
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.
KT6774IA2STRAITLINE TRANSPORTATION LLCJul 30, 2026Jul 30, 20261
PT9980PPAH FRED BAREFOOT TRUCKING INCJul 31, 2023Jul 31, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 29, 2026