Equipment unit · VIN-decoded · NHTSA vPIC

2018 Polar Tank Trailer

3H6S34329J7049916 · TRAILER
Carriers run under1
19 mo
Inspections4
all-time
OOS inspections4
of 4
First seenNov 21, 2024
WY
Last seenJun 19, 2026
TX
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
3H6S34329J7049916
Make
Polar Tank Trailer
Model
Not decoded
Model year
2018
Body class
Not decoded
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
S3432

Deterministic · VIN positions 4–8.

Check digit
9 · valid

Deterministic · position 9; calculated value 9.

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
049916

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 · 10 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 10 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
2018

Observed directly for this VIN via NHTSA vPIC.

Observed make
POLAR TANK TRAILER

Observed directly for this VIN via NHTSA vPIC.

Observed model
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Not established

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 · Nov 21, 2024 – Jun 19, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 19, 2026TXII · Walk-around14OOSSCHST LLC 593350239031A/ME
May 28, 2026TXI · Full3OOSSCHST LLC 593350239031A/ME
May 28, 2026TXI · Full3OOSSCHST LLC 593350239031A/ME
Nov 21, 2024WYI · Full3OOSSCHST LLC 593350239031A/ME
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SCHST LLC593350Nov 21, 2024Jun 19, 20264TX
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.
239031AME2SCHST LLCNov 21, 2024Jun 19, 20264
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026