Equipment unit · VIN-decoded · NHTSA vPIC

1W91H5028MM288993

Not yet decoded
Carriers run under1
18 mo
Inspections2
all-time
OOS inspections1
of 2
First seenMay 6, 2024
CA
Last seenNov 17, 2025
CA
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
1W9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
1H502

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

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
288993

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
WILKENS INDUSTRIES, INC

Prefix basis · 5 decoded VINs at 100.0% prefix purity.

Model
Wilkens Industries, Inc Trailer

Prefix basis · 5 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 · May 6, 2024 – Nov 17, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 17, 2025CAIII · Driver-only1ALAMEDA COUNTY INDUSTRIES INC 26667464WR7405/CA
May 6, 2024CAII · Walk-around1OOSALAMEDA COUNTY INDUSTRIES INC 26667464TT8567/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ALAMEDA COUNTY INDUSTRIES INC2666746May 6, 2024Nov 17, 20252CA
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.
4WR7405CAALAMEDA COUNTY INDUSTRIES INCNov 17, 2025Nov 17, 20251
4TT8567CAALAMEDA COUNTY INDUSTRIES INCMay 6, 2024May 6, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC