Equipment unit · VIN-decoded · NHTSA vPIC

2009 Doonan Specialized Trailer

1D9BG533091609102 · TRAILER
Carriers run under2
17 mo
Inspections3
all-time
OOS inspections0
of 3
First seenNov 13, 2023
WA
Last seenApr 23, 2025
OR
Inspected under 2 different carriers in 17 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
1D9BG533091609102
Make
Doonan Specialized Trailer
Model
Not decoded
Model year
2009
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 19, 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
1D9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
BG533

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
2009 or 2039

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

North American serial sequence
609102

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
DOONAN SPECIALIZED TRAILER

Prefix basis · 85 decoded VINs at 100.0% prefix purity.

Model
Doonan Specialized Trailer

Prefix basis · 85 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
2009

Observed directly for this VIN via NHTSA vPIC.

Observed make
DOONAN SPECIALIZED 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 13, 2023 – Apr 23, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 23, 2025ORIII · Driver-only0BIG BOY TRANSPORTS LLC 42688583059XNWA/WA
Mar 19, 2024WAIII · Driver-only1NORTHWEST LINES INC 15415693059XN/WA
Nov 13, 2023WAIII · Driver-only0NORTHWEST LINES INC 15415693059XN/WA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BIG BOY TRANSPORTS LLC4268858Apr 23, 2025Apr 23, 20251WA
NORTHWEST LINES INC1541569Nov 13, 2023Mar 19, 20242WA
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.
3059XNWAWABIG BOY TRANSPORTS LLCApr 23, 2025Apr 23, 20251
3059XNWANORTHWEST LINES INCNov 13, 2023Mar 19, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 19, 2026