Equipment unit · VIN-decoded · NHTSA vPIC

1DW1A5328SBB81512

Not yet decoded
Carriers run under2
18 mo
Inspections2
all-time
OOS inspections0
of 2
First seenNov 20, 2024
TX
Last seenMay 29, 2026
AR
Inspected under 2 different carriers in 18 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

This VIN has not been decoded yet — the unit's carrier, inspection and plate history below is reconstructed from the FMCSA inspection feed regardless.

Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
1DW

Deterministic · VIN positions 1–3.

Vehicle descriptor section
1A532

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1995 or 2025

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

North American serial sequence
B81512

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
STOUGHTON TRAILERS

Prefix basis · 12,945 decoded VINs at 100.0% prefix purity.

Model
Stoughton Trailers

Prefix basis · 12,945 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.

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 20, 2024 – May 29, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 29, 2026ARIII · Driver-only0OPTIMIST TRUCKING LLC 3609915PE50621/IN
Nov 20, 2024TXII · Walk-around0HORUS EVOLUTION LLC 3493302PE50621/IN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
OPTIMIST TRUCKING LLC3609915May 29, 2026May 29, 20261TX
HORUS EVOLUTION LLC3493302Nov 20, 2024Nov 20, 20241TX
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.
PE50621INOPTIMIST TRUCKING LLCMay 29, 2026May 29, 20261
PE50621INHORUS EVOLUTION LLCNov 20, 2024Nov 20, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC