Equipment unit · VIN-decoded · NHTSA vPIC

1999 Stoughton Trailers

1DW1A5328XS270324 · Trailer · TRAILER
Carriers run under2
32 mo
Inspections8
all-time
OOS inspections3
of 8
First seenDec 28, 2023
CA
Last seenAug 3, 2026
CA
Inspected under 2 different carriers in 32 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
1DW1A5328XS270324
Make
Stoughton Trailers
Model
Stoughton Trailers
Model year
1999
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 22, 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
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
1999 or 2029

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

North American serial sequence
270324

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.

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
STOUGHTON TRAILERS

Observed directly for this VIN via NHTSA vPIC.

Observed model
Stoughton Trailers

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 · Dec 28, 2023 – Aug 3, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 3, 2026CAI · Full4OOSRIOS TRANSPORTATION LOGISTICS LLC 42589624TU2507/CA
Jul 22, 2026CAII · Walk-around1RIOS TRANSPORTATION LOGISTICS LLC 42589624TU2507/CA
Jun 11, 2026CAII · Walk-around6RIOS TRANSPORTATION LOGISTICS LLC 42589624TU2507/CA
Nov 6, 2025CAI · Full1RIOS TRANSPORTATION LOGISTICS LLC 42589624TU2507/CA
Jan 28, 2025CAIII · Driver-only2OOSRIOS TRANSPORTATION LOGISTICS LLC 42589624TU2507/CA
Jan 24, 2025CAII · Walk-around2RIOS TRANSPORTATION LOGISTICS LLC 42589624TU2507/CA
Jan 14, 2025CAIII · Driver-only0RIOS TRANSPORTATION LOGISTICS LLC 42589624TU2507/CA
Dec 28, 2023CAII · Walk-around3OOSJESUS MANUEL RIOS DUARTE 22677174TU2507/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
RIOS TRANSPORTATION LOGISTICS LLC4258962Jan 14, 2025Aug 3, 20267CA
JESUS MANUEL RIOS DUARTE2267717Dec 28, 2023Dec 28, 20231CA
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.
4TU2507CA2RIOS TRANSPORTATION LOGISTICS LLCJan 14, 2025Aug 3, 20267
4TU2507CAJESUS MANUEL RIOS DUARTEDec 28, 2023Dec 28, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 22, 2026