Equipment unit · VIN-decoded · NHTSA vPIC

2023 Pioneer Truckweld

4S9P32925PS331523 · Trailer · TRAILER
Carriers run under2
20 mo
Inspections3
all-time
OOS inspections1
of 3
First seenMar 28, 2024
OR
Last seenNov 10, 2025
MT
Inspected under 2 different carriers in 20 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
4S9P32925PS331523
Make
Pioneer Truckweld
Model
Pioneer Truckweld
Model year
2023
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 9, 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
4S9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
P3292

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
1993 or 2023

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

North American serial sequence
331523

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
2023

Observed directly for this VIN via NHTSA vPIC.

Observed make
PIONEER TRUCKWELD

Observed directly for this VIN via NHTSA vPIC.

Observed model
Pioneer Truckweld

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 · Mar 28, 2024 – Nov 10, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 10, 2025MTI · Full1JAY OSTER TRUCKING INC 2012478656579D/MT
Jan 13, 2025MTIII · Driver-only0JAY OSTER TRUCKING INC 2012478656579D/MT
Mar 28, 2024ORII · Walk-around4OOSSTAFFORD TRUCKING LLC 3136865NA/OR
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
JAY OSTER TRUCKING INC2012478Jan 13, 2025Nov 10, 20252MT
STAFFORD TRUCKING LLC3136865Mar 28, 2024Mar 28, 20241OR
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.
656579DMTJAY OSTER TRUCKING INCJan 13, 2025Nov 10, 20252
NAORSTAFFORD TRUCKING LLCMar 28, 2024Mar 28, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 9, 2026