Equipment unit · VIN-decoded · NHTSA vPIC

2005 Dragon Products

1UNST42235L029115 · Trailer · TRAILER
Carriers run under2
37 mo
Inspections4
all-time
OOS inspections0
of 4
First seenJun 29, 2023
TX
Last seenJul 1, 2026
TX
Inspected under 2 different carriers in 37 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
1UNST42235L029115
Make
Dragon Products
Model
Dragon Products
Model year
2005
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 16, 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
1UN

Deterministic · VIN positions 1–3.

Vehicle descriptor section
ST422

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
2005 or 2035

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

North American serial sequence
029115

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.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

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
2005

Observed directly for this VIN via NHTSA vPIC.

Observed make
DRAGON PRODUCTS

Observed directly for this VIN via NHTSA vPIC.

Observed model
Dragon Products

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

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jun 29, 2023 – Jul 1, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 1, 2026TXII · Walk-around0BIG JS ROUSTABOUT SERVICES LLC 4552337173C523/TX
Jul 1, 2026TXII · Walk-around0BIG JS ROUSTABOUT SERVICES LLC 4552337173C523/TX
Dec 1, 2023TXII · Walk-around6JIS MEASUREMENT & OPERATING INC 2478868173C523/TX
Jun 29, 2023TXII · Walk-around5JIS MEASUREMENT & OPERATING INC 2478868173C523/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BIG JS ROUSTABOUT SERVICES LLC4552337Jul 1, 2026Jul 1, 20262TX
JIS MEASUREMENT & OPERATING INC2478868Jun 29, 2023Dec 1, 20232TX
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.
173C523TX2BIG JS ROUSTABOUT SERVICES LLCJul 1, 2026Jul 1, 20262
173C523TXJIS MEASUREMENT & OPERATING INCJun 29, 2023Dec 1, 20232
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 16, 2026