Equipment unit · VIN-decoded · NHTSA vPIC

2018 Polar Tank Trailer

1PMS3422XJ1049915 · TRAILER
Carriers run under2
33 mo
Inspections4
all-time
OOS inspections0
of 4
First seenJan 29, 2024
TX
Last seenOct 21, 2026
OK
Inspected under 2 different carriers in 33 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
1PMS3422XJ1049915
Make
Polar Tank Trailer
Model
Not decoded
Model year
2018
Body class
Not decoded
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
S3422

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
1988 or 2018

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

North American serial sequence
049915

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 · 246 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 246 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.

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 29, 2024 – Oct 21, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 21, 2026OKII · Walk-around0—FRONTIER LOGISTICAL SERVICES LLC 1535212102C989/TX
Oct 20, 2026OKII · Walk-around2—FRONTIER LOGISTICAL SERVICES LLC 1535212102C989/TX
Jan 20, 2025TXII · Walk-around0—DAKOTA DISTRIBUTING LLC 4171319102C989/TX
Jan 29, 2024TXI · Full2—DAKOTA DISTRIBUTING LLC 4171319102C989/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
FRONTIER LOGISTICAL SERVICES LLC1535212Oct 20, 2026Oct 21, 20262TN
DAKOTA DISTRIBUTING LLC4171319Jan 29, 2024Jan 20, 20252TX
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.
102C989TX2FRONTIER LOGISTICAL SERVICES LLCOct 20, 2026 → Oct 21, 20262
102C989TX—DAKOTA DISTRIBUTING LLCJan 29, 2024 → Jan 20, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 29, 2026