Equipment unit · VIN-decoded · NHTSA vPIC

2017 Western Trailer Company

5DN115344HB000491 · Trailer · TRAILER
Carriers run under1
25 mo
Inspections6
all-time
OOS inspections2
of 6
First seenNov 21, 2023
WA
Last seenDec 3, 2025
WA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
5DN115344HB000491
Make
Western Trailer Company
Model
Western Trailer Company
Model year
2017
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 25, 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
5DN

Deterministic · VIN positions 1–3.

Vehicle descriptor section
11534

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1987 or 2017

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

North American serial sequence
000491

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 · 384 decoded VINs at 100.0% prefix purity.

Model
Western Trailer Company

Prefix basis · 384 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
2017

Observed directly for this VIN via NHTSA vPIC.

Observed make
WESTERN TRAILER COMPANY

Observed directly for this VIN via NHTSA vPIC.

Observed model
Western Trailer Company

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 · Nov 21, 2023 – Dec 3, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 3, 2025WAIII · Driver-only0WILLIS TRANSPORTATION LLC 5181427589ZP/WA
Jun 13, 2025WAIII · Driver-only0WILLIS TRANSPORTATION LLC 5181427589ZP/WA
Apr 30, 2025WAIII · Driver-only1WILLIS TRANSPORTATION LLC 5181427589ZP/WA
Oct 31, 2024WAII · Walk-around1WILLIS TRANSPORTATION LLC 5181427589ZP/WA
Feb 27, 2024WAII · Walk-around1OOSWILLIS TRANSPORTATION LLC 5181427589ZP/WA
Nov 21, 2023WAII · Walk-around3OOSWILLIS TRANSPORTATION LLC 5181427589ZP/WA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
WILLIS TRANSPORTATION LLC518142Nov 21, 2023Dec 3, 20256WA
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.
7589ZPWAWILLIS TRANSPORTATION LLCNov 21, 2023Dec 3, 20256
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 25, 2026