Equipment unit · VIN-decoded · NHTSA vPIC

1998 Polar Tank Trailer

1PMB14424W2019426 · Trailer · TRAILER
Carriers run under2
25 mo
Inspections4
all-time
OOS inspections1
of 4
First seenJun 10, 2024
CA
Last seenJul 14, 2026
CA
Inspected under 2 different carriers in 25 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
1PMB14424W2019426
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
1998
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 26, 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
B1442

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

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
019426

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 · 58 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 58 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 · Jun 10, 2024 – Jul 14, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 14, 2026CAI · Full5OOSSIXTO ALFONSO FELIX LOPEZ 7472624TC8051/CA
Nov 20, 2025CAIII · Driver-only0SIXTO ALFONSO FELIX LOPEZ 7472624TC8051/CA
Jan 9, 2025CAIII · Driver-only1SIXTO ALFONSO FELIX LOPEZ 7472624TC8051/CA
Jun 10, 2024CAV · Vehicle-only0FRANK C ALEGRE TRUCKING INC 2962314TC8051/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SIXTO ALFONSO FELIX LOPEZ747262Jan 9, 2025Jul 14, 20263BN
FRANK C ALEGRE TRUCKING INC296231Jun 10, 2024Jun 10, 20241CA
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.
4TC8051CA2SIXTO ALFONSO FELIX LOPEZJan 9, 2025Jul 14, 20263
4TC8051CAFRANK C ALEGRE TRUCKING INCJun 10, 2024Jun 10, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 26, 2026