Equipment unit · VIN-decoded · NHTSA vPIC

2025 Stoughton Trailers

1DW1A5321SSB98216 · Trailer · TRAILER
Carriers run under3
10 mo
Inspections3
all-time
OOS inspections0
of 3
First seenOct 14, 2025
TX
Last seenAug 5, 2026
TX
Inspected under 3 different carriers in 10 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
1DW1A5321SSB98216
Make
Stoughton Trailers
Model
Stoughton Trailers
Model year
2025
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
1DW

Deterministic · VIN positions 1–3.

Vehicle descriptor section
1A532

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

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
B98216

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
2025

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 · Oct 14, 2025 – Aug 5, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 5, 2026TXIII · Driver-only3EP SOUTH WEST LOGISTICS INC 29905235451927/ME
Jul 14, 2026TXII · Walk-around1AMBAS FRONTERAS SERVICIOS DE TRANSPORTE S DE RL DE CV 38980865451927/ME
Oct 14, 2025TXI · Full0BORDER EXPRESS DE MEXICO SA DE CV 16921795451927/ME
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
EP SOUTH WEST LOGISTICS INC2990523Aug 5, 2026Aug 5, 20261TX
AMBAS FRONTERAS SERVICIOS DE TRANSPORTE S DE RL DE CV3898086Jul 14, 2026Jul 14, 20261CI
BORDER EXPRESS DE MEXICO SA DE CV1692179Oct 14, 2025Oct 14, 20251CI
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.
5451927ME2EP SOUTH WEST LOGISTICS INCAug 5, 2026Aug 5, 20261
5451927ME2AMBAS FRONTERAS SERVICIOS DE TRANSPORTE S DE RL DE CVJul 14, 2026Jul 14, 20261
5451927MEBORDER EXPRESS DE MEXICO SA DE CVOct 14, 2025Oct 14, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 9, 2026