Equipment unit · VIN-decoded · NHTSA vPIC

2023 Stoughton Trailers

1DW1A5323PSB11231 · Trailer · TRAILER
Carriers run under2
25 mo
Inspections6
all-time
OOS inspections0
of 6
First seenJan 4, 2024
AR
Last seenFeb 18, 2026
AK
Inspected under 2 different carriers in 25 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
1DW1A5323PSB11231
Make
Stoughton Trailers
Model
Stoughton Trailers
Model year
2023
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
3 · valid

Deterministic · position 9; calculated value 3.

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
B11231

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
2023

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 · Jan 4, 2024 – Feb 18, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 18, 2026AKIII · Driver-only2TWO BROTHERS FREIGHT INC 31417688231WA/AK
Jan 20, 2026AKIII · Driver-only0TWO BROTHERS FREIGHT INC 31417688231WA/AK
Dec 5, 2025AKIII · Driver-only5KNIGHT TRUCKING LLC 37982908231WA/AK
Nov 6, 2024AKIII · Driver-only0TWO BROTHERS FREIGHT INC 3141768892614ST/IL
Feb 7, 2024MOIII · Driver-only0TWO BROTHERS FREIGHT INC 3141768892614ST/IL
Jan 4, 2024ARIII · Driver-only0TWO BROTHERS FREIGHT INC 3141768892614ST/IL
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TWO BROTHERS FREIGHT INC3141768Jan 4, 2024Feb 18, 20265IL
KNIGHT TRUCKING LLC3798290Dec 5, 2025Dec 5, 20251AK
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.
8231WAAKTWO BROTHERS FREIGHT INCJan 20, 2026Feb 18, 20262
8231WAAKKNIGHT TRUCKING LLCDec 5, 2025Dec 5, 20251
892614STILTWO BROTHERS FREIGHT INCJan 4, 2024Nov 6, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 22, 2026