Equipment unit · VIN-decoded · NHTSA vPIC

2023 Polar Tank Trailer

3H6KR4224P3121248 · Trailer · TRAILER
Carriers run under2
23 mo
Inspections7
all-time
OOS inspections1
of 7
First seenJun 20, 2023
OK
Last seenMay 13, 2025
KS
Inspected under 2 different carriers in 23 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
3H6KR4224P3121248
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2023
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
3H6

Deterministic · VIN positions 1–3.

Vehicle descriptor section
KR422

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1993 or 2023

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

North American serial sequence
121248

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 · 20 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 20 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
2023

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 20, 2023 – May 13, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
May 13, 2025KSIII · Driver-only3PENLEY OIL COMPANY 2364414CS3791/OK
Jan 30, 2025OKII · Walk-around0PENLEY OIL COMPANY 2364414CS3791/OK
Oct 2, 2024OKIII · Driver-only1PENLEY OIL COMPANY 2364414CS3791/OK
Jul 22, 2024OKIII · Driver-only0PENLEY OIL COMPANY 2364414CS3791/OK
May 3, 2024OKIII · Driver-only0PENLEY OIL COMPANY 2364414CS3791/OK
Aug 24, 2023MOI · Full8OOSPENLEY TRANSPORTATION COMPANY LLC 2475053CS3791/AR
Jun 20, 2023OKII · Walk-around0PENLEY TRANSPORTATION COMPANY LLC 2475053CS3791/OK
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
PENLEY OIL COMPANY2364414May 3, 2024May 13, 20255OK
PENLEY TRANSPORTATION COMPANY LLC2475053Jun 20, 2023Aug 24, 20232OK
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.
CS3791OKPENLEY OIL COMPANYMay 3, 2024May 13, 20255
CS3791ARPENLEY TRANSPORTATION COMPANY LLCAug 24, 2023Aug 24, 20231
CS3791OKPENLEY TRANSPORTATION COMPANY LLCJun 20, 2023Jun 20, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 20, 2026