Equipment unit · VIN-decoded · NHTSA vPIC

2019 Doonan Specialized Trailer

1D9BG4820K1609407 · Trailer · TRAILER
Carriers run under2
32 mo
Inspections4
all-time
OOS inspections0
of 4
First seenOct 7, 2023
NE
Last seenJun 24, 2026
GA
Inspected under 2 different carriers in 32 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
1D9BG4820K1609407
Make
Doonan Specialized Trailer
Model
Doonan Specialized Trailer
Model year
2019
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 5, 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
BG482

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
1989 or 2019

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

North American serial sequence
609407

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 · 127 decoded VINs at 99.2% prefix purity.

Model
Doonan Specialized Trailer

Prefix basis · 127 decoded VINs at 99.2% 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
2019

Observed directly for this VIN via NHTSA vPIC.

Observed make
DOONAN SPECIALIZED TRAILER

Observed directly for this VIN via NHTSA vPIC.

Observed model
Doonan Specialized 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 · Oct 7, 2023 – Jun 24, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 24, 2026GAIII · Driver-only1IOWA MOTOR TRUCK TRANSPORT INC 313015DZ5830/IA
Jul 14, 2025NMIII · Driver-only0THINK BIG ENTERPRISES LLC 3213015DZ5830/IA
Sep 2, 2024NMII · Walk-around0IOWA MOTOR TRUCK TRANSPORT INC 313015DZ5830/IA
Oct 7, 2023NEIII · Driver-only0IOWA MOTOR TRUCK TRANSPORT INC 313015DZ5830/IA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
IOWA MOTOR TRUCK TRANSPORT INC313015Oct 7, 2023Jun 24, 20263IA
THINK BIG ENTERPRISES LLC3213015Jul 14, 2025Jul 14, 20251VA
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.
DZ5830IA2IOWA MOTOR TRUCK TRANSPORT INCOct 7, 2023Jun 24, 20263
DZ5830IATHINK BIG ENTERPRISES LLCJul 14, 2025Jul 14, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 5, 2026