Equipment unit · VIN-decoded · NHTSA vPIC

5DN174827LB001658

Not yet decoded
Carriers run under2
22 mo
Inspections3
all-time
OOS inspections1
of 3
First seenJul 30, 2024
CA
Last seenMay 13, 2026
NM
Inspected under 2 different carriers in 22 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

This VIN has not been decoded yet — the unit's carrier, inspection and plate history below is reconstructed from the FMCSA inspection feed regardless.

Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
5DN

Deterministic · VIN positions 1–3.

Vehicle descriptor section
17482

Deterministic · VIN positions 4–8.

Check digit
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
1990 or 2020

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

North American serial sequence
001658

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
WESTERN TRAILER COMPANY

Prefix basis · 48 decoded VINs at 100.0% prefix purity.

Model
Western Trailer Company

Prefix basis · 48 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 · Jul 30, 2024 – May 13, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 13, 2026NMI · Full1OOSSYSTEM TRANSPORT INC 2793534105AD/WA
Sep 22, 2025TXII · Walk-around0SYSTEM TRANSPORT INC 2793534105AD/WA
Jul 30, 2024CAIII · Driver-only0T-W TRANSPORT INC 2793734105AD/WA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SYSTEM TRANSPORT INC27935Sep 22, 2025May 13, 20262WA
T-W TRANSPORT INC27937Jul 30, 2024Jul 30, 20241WA
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.
34105ADWA2SYSTEM TRANSPORT INCSep 22, 2025May 13, 20262
34105ADWAT-W TRANSPORT INCJul 30, 2024Jul 30, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC