Equipment unit · VIN-decoded · NHTSA vPIC

4S0DP322311000189

Not yet decoded
Carriers run under1
25 mo
Inspections2
all-time
OOS inspections0
of 2
First seenOct 25, 2023
CA
Last seenNov 18, 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
4S0

Deterministic · VIN positions 1–3.

Vehicle descriptor section
DP322

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
2001 or 2031

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

North American serial sequence
000189

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
TRAILBOSS

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

Model
Trailboss 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 · Oct 25, 2023 – Nov 18, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 18, 2025CAI · Full2AMERICAN ASPHALT REPAIR AND RESURFACING CO INC 17016871WU9738/CA
Oct 25, 2023CAI · Full2AMERICAN ASPHALT REPAIR AND RESURFACING CO INC 17016871WU9738/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
AMERICAN ASPHALT REPAIR AND RESURFACING CO INC1701687Oct 25, 2023Nov 18, 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.
1WU9738CAAMERICAN ASPHALT REPAIR AND RESURFACING CO INCOct 25, 2023Nov 18, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC