Equipment unit · VIN-decoded · NHTSA vPIC

1999 Boydstun Metal Works

1B9CS4529XP275741 · TRAILER
Carriers run under2
30 mo
Inspections6
all-time
OOS inspections1
of 6
First seenNov 24, 2023
US
Last seenMay 28, 2026
TX
Inspected under 2 different carriers in 30 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
1B9CS4529XP275741
Make
Boydstun Metal Works
Model
Not decoded
Model year
1999
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 10, 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
1B9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
CS452

Deterministic · VIN positions 4–8.

Check digit
9 · valid

Deterministic · position 9; calculated value 9.

Model year candidates
1999 or 2029

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

North American serial sequence
275741

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
1999

Observed directly for this VIN via NHTSA vPIC.

Observed make
BOYDSTUN METAL WORKS

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

  • 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 · Nov 24, 2023 – May 28, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 28, 2026TXII · Walk-around5JOSE EVERARDO CAVAZOS PASSEMENT 338820346Y345W/TX
Dec 16, 2025MSII · Walk-around5OOSHILARIOS AUTOTRUCKING 175168571Y126W/TX
Jun 11, 2025USIII · Driver-only0HILARIOS AUTOTRUCKING 175168541W907V/TX
Jan 13, 2025USIII · Driver-only0HILARIOS AUTOTRUCKING 175168547V712V/TX
Apr 16, 2024USIII · Driver-only0HILARIOS AUTOTRUCKING 175168517Y392V/TX
Nov 24, 2023USIII · Driver-only0HILARIOS AUTOTRUCKING 175168551W236V/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
JOSE EVERARDO CAVAZOS PASSEMENT3388203May 28, 2026May 28, 20261TA
HILARIOS AUTOTRUCKING1751685Nov 24, 2023Dec 16, 20255GT
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.
46Y345WTXJOSE EVERARDO CAVAZOS PASSEMENTMay 28, 2026May 28, 20261
71Y126WTXHILARIOS AUTOTRUCKINGDec 16, 2025Dec 16, 20251
41W907VTXHILARIOS AUTOTRUCKINGJun 11, 2025Jun 11, 20251
47V712VTXHILARIOS AUTOTRUCKINGJan 13, 2025Jan 13, 20251
17Y392VTXHILARIOS AUTOTRUCKINGApr 16, 2024Apr 16, 20241
51W236VTXHILARIOS AUTOTRUCKINGNov 24, 2023Nov 24, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 10, 2026