Equipment unit · VIN-decoded · NHTSA vPIC

2018 Stoughton Trailers

1DW1A5321JSA12933 · Trailer · TRAILER
Carriers run under1
20 mo
Inspections4
all-time
OOS inspections0
of 4
First seenAug 15, 2024
MI
Last seenApr 27, 2026
ME
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1DW1A5321JSA12933
Make
Stoughton Trailers
Model
Stoughton Trailers
Model year
2018
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 5, 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
1988 or 2018

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

North American serial sequence
A12933

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
2018

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 · Aug 15, 2024 – Apr 27, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 27, 2026MEI · Full4AYR MOTOR EXPRESS INC 439471R1562D/ON
Apr 9, 2026SDI · Full0AYR MOTOR EXPRESS INC 439471R15620/ON
Aug 26, 2025MEII · Walk-around2AYR MOTOR EXPRESS INC 439471R1562D/ON
Aug 15, 2024MIIII · Driver-only1AYR MOTOR EXPRESS INC 439471R1562D/ON
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
AYR MOTOR EXPRESS INC439471Aug 15, 2024Apr 27, 20264NB
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.
R1562DONAYR MOTOR EXPRESS INCAug 15, 2024Apr 27, 20263
R15620ONAYR MOTOR EXPRESS INCApr 9, 2026Apr 9, 20261
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 5, 2026