Equipment unit · VIN-decoded · NHTSA vPIC

2021 Stoughton Trailers

1DW1B452XMS646019 · Trailer · TRAILER
Carriers run under1
38 mo
Inspections8
all-time
OOS inspections2
of 8
First seenJun 20, 2023
CA
Last seenAug 5, 2026
CA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1DW1B452XMS646019
Make
Stoughton Trailers
Model
Stoughton Trailers
Model year
2021
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 19, 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
1B452

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
1991 or 2021

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

North American serial sequence
646019

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
2021

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

  • 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 · Jun 20, 2023 – Aug 5, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 5, 2026CAI · Full2E B STONE & SON INC 5537724CU1086/CA
Jan 28, 2026CAI · Full0E B STONE & SON INC 5537724CU1086/CA
May 20, 2025CAII · Walk-around2E B STONE & SON INC 5537724CU1086/CA
Mar 19, 2025CAI · Full1E B STONE & SON INC 5537724CU1086/CA
Mar 4, 2025CAII · Walk-around2OOSE B STONE & SON INC 5537724CU1086/CA
Nov 21, 2024CAII · Walk-around1OOSE B STONE & SON INC 5537724CU1086/CA
Oct 9, 2024CAII · Walk-around1E B STONE & SON INC 5537724CU1086/CA
Jun 20, 2023CAIII · Driver-only0E B STONE & SON INC 5537724CU1086/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
E B STONE & SON INC553772Jun 20, 2023Aug 5, 20268CA
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.
4CU1086CA2E B STONE & SON INCJun 20, 2023Aug 5, 20268
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 19, 2026