Equipment unit · VIN-decoded · NHTSA vPIC

2011 Polar Tank Trailer

1PMA34221B1037519 · Trailer · TRAILER
Carriers run under3
28 mo
Inspections9
all-time
OOS inspections3
of 9
First seenJan 26, 2024
TX
Last seenMay 4, 2026
TX
Inspected under 3 different carriers in 28 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
1PMA34221B1037519
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2011
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 20, 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
A3422

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1981 or 2011

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

North American serial sequence
037519

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 · 201 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 201 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
2011

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 · Jan 26, 2024 – May 4, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 4, 2026TXI · Full2BLANCA ESTHER ALEJANDRO MARTINEZ 3339885220B832/TX
Mar 24, 2026USII · Walk-around2BLANCA ESTHER ALEJANDRO MARTINEZ 3339885220B832/TX
Mar 10, 2025TXII · Walk-around6OOSPEGASUS INTERTRANSPORT LLC 3133806220B832/TX
Feb 18, 2025TXII · Walk-around2PEGASUS INTERTRANSPORT LLC 3133806220B832/TX
Dec 2, 2024TXI · Full3OOSPEGASUS INTERTRANSPORT LLC 3133806220B832/TX
Sep 17, 2024TXII · Walk-around1PEGASUS INTERTRANSPORT LLC 3133806220B832/TX
Apr 5, 2024TXI · Full7OOSPEGASUS INTERTRANSPORT LLC 3133806220B832/TX
Mar 19, 2024TXII · Walk-around7PEGASUS INTERTRANSPORT LLC 3133806220B832/TX
Jan 26, 2024TXI · Full7MARTIN ARMANDO ZUNIGA PEREZ 3239168220B832/TX
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BLANCA ESTHER ALEJANDRO MARTINEZ3339885Mar 24, 2026May 4, 20262TA
PEGASUS INTERTRANSPORT LLC3133806Mar 19, 2024Mar 10, 20256TX
MARTIN ARMANDO ZUNIGA PEREZ3239168Jan 26, 2024Jan 26, 20241TA
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.
220B832TXBLANCA ESTHER ALEJANDRO MARTINEZMar 24, 2026May 4, 20262
220B832TXPEGASUS INTERTRANSPORT LLCMar 19, 2024Mar 10, 20256
220B832TXMARTIN ARMANDO ZUNIGA PEREZJan 26, 2024Jan 26, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 20, 2026