Equipment unit · VIN-decoded · NHTSA vPIC

2004 Construction Trailer Specialists

1C91140204S770634 · Trailer · TRAILER
Carriers run under3
31 mo
Inspections5
all-time
OOS inspections0
of 5
First seenJun 21, 2023
TX
Last seenJan 8, 2026
TX
Inspected under 3 different carriers in 31 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
1C91140204S770634
Make
Construction Trailer Specialists
Model
CONSTRUCTION TRAILER SPECIALISTS
Model year
2004
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 28, 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
1C9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
11402

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
2004 or 2034

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

North American serial sequence
770634

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
CONSTRUCTION TRAILER SPECIALISTS

Prefix basis · 202 decoded VINs at 100.0% prefix purity.

Model
CONSTRUCTION TRAILER SPECIALISTS

Prefix basis · 202 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
2004

Observed directly for this VIN via NHTSA vPIC.

Observed make
CONSTRUCTION TRAILER SPECIALISTS

Observed directly for this VIN via NHTSA vPIC.

Observed model
CONSTRUCTION TRAILER SPECIALISTS

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 · Jun 21, 2023 – Jan 8, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 8, 2026TXII · Walk-around1ALBERTO GUEVARA 4448308260C931/TX
Oct 2, 2025TXII · Walk-around1ALBERTO GUEVARA 4448308260C931/TX
Jun 4, 2025TXII · Walk-around12J&J TRUCKING & BACKHOE SERVICES LLC 2884554201B105/TX
May 20, 2025TXII · Walk-around6J&J TRUCKING & BACKHOE SERVICES LLC 2884554201B105/TX
Jun 21, 2023TXII · Walk-around1VALLEY STEEL CONSTRUCTION INC 2040370201B105/TX
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ALBERTO GUEVARA4448308Oct 2, 2025Jan 8, 20262TX
J&J TRUCKING & BACKHOE SERVICES LLC2884554May 20, 2025Jun 4, 20252TX
VALLEY STEEL CONSTRUCTION INC2040370Jun 21, 2023Jun 21, 20231TX
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.
260C931TXALBERTO GUEVARAOct 2, 2025Jan 8, 20262
201B105TXJ&J TRUCKING & BACKHOE SERVICES LLCMay 20, 2025Jun 4, 20252
201B105TXVALLEY STEEL CONSTRUCTION INCJun 21, 2023Jun 21, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026