Equipment unit · VIN-decoded · NHTSA vPIC

2023 Polar Tank Trailer

3H6KF4420P3119499 · Trailer · TRAILER
Carriers run under1
14 mo
Inspections6
all-time
OOS inspections0
of 6
First seenMay 14, 2025
TN
Last seenJul 24, 2026
TN
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
3H6KF4420P3119499
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
2023
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 12, 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
KF442

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

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
119499

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 · 8 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 8 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 · May 14, 2025 – Jul 24, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 24, 2026TNI · Full0HIGHWAY TRANSPORT CHEMICAL LLC 41216266122T/TN
Jul 15, 2026COII · Walk-around0HIGHWAY TRANSPORT CHEMICAL LLC 41216266122T/TN
Apr 1, 2026NMII · Walk-around1HIGHWAY TRANSPORT CHEMICAL LLC 41216266122T/TN
Apr 1, 2026NMII · Walk-around1HIGHWAY TRANSPORT CHEMICAL LLC 41216266122T/TN
Mar 26, 2026TNI · Full0HIGHWAY TRANSPORT CHEMICAL LLC 41216266122T/TN
May 14, 2025TNI · Full0HIGHWAY TRANSPORT CHEMICAL LLC 41216266122T/TN
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HIGHWAY TRANSPORT CHEMICAL LLC41216May 14, 2025Jul 24, 20266TN
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.
266122TTN2HIGHWAY TRANSPORT CHEMICAL LLCMay 14, 2025Jul 24, 20266
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026