Equipment unit · VIN-decoded · NHTSA vPIC

1DW4C5329NEA88637

Not yet decoded
Carriers run under2
30 mo
Inspections2
all-time
OOS inspections0
of 2
First seenSep 20, 2023
CA
Last seenMar 17, 2026
CA
Inspected under 2 different carriers in 30 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

This VIN has not been decoded yet — the unit's carrier, inspection and plate history below is reconstructed from the FMCSA inspection feed regardless.

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
4C532

Deterministic · VIN positions 4–8.

Check digit
9 · valid

Deterministic · position 9; calculated value 9.

Model year candidates
1992 or 2022

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

North American serial sequence
A88637

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 · 33 decoded VINs at 100.0% prefix purity.

Model
Stoughton Trailers

Prefix basis · 33 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.

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 · Sep 20, 2023 – Mar 17, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 17, 2026CAII · Walk-around2SWIFT TRANS INC 3357011203424T/TN
Sep 20, 2023CAIII · Driver-only1MARTEN TRANSPORT LTD 744322034245/TN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SWIFT TRANS INC3357011Mar 17, 2026Mar 17, 20261CA
MARTEN TRANSPORT LTD74432Sep 20, 2023Sep 20, 20231WI
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.
203424TTNSWIFT TRANS INCMar 17, 2026Mar 17, 20261
2034245TNMARTEN TRANSPORT LTDSep 20, 2023Sep 20, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC