Equipment unit · Public inspection records

4FMUS1710RR530517

Not yet decoded
Carriers run under2
8 mo
Inspections2
all-time
OOS inspections0
of 2
First seenJan 7, 2026
CA
Last seenSep 15, 2026
CA
Inspected under 2 different carriers in 8 months
These observations show where this VIN appeared, not who owned the vehicle. Sales, leases or owner-operator moves may explain carrier changes. A shared VIN alone is not a fraud finding. Compare dates and sources in the timeline below.
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
4FM

Deterministic · VIN positions 1–3.

Vehicle descriptor section
US171

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
1994 or 2024

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

North American serial sequence
530517

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.

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 · Jan 7, 2026 – Sep 15, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 15, 2026CAII · Walk-around0—WRIGHT TREE SERVICE INC 170146FZ4420/IA
Jan 7, 2026CAII · Walk-around1—WRIGHT TREE SERVICE OF THE WEST INC 23536314VZ1578/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
WRIGHT TREE SERVICE INC170146Sep 15, 2026Sep 15, 20261IA
WRIGHT TREE SERVICE OF THE WEST INC2353631Jan 7, 2026Jan 7, 20261IA
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.
FZ4420IA2WRIGHT TREE SERVICE INCSep 15, 2026 → Sep 15, 20261
4VZ1578CA—WRIGHT TREE SERVICE OF THE WEST INCJan 7, 2026 → Jan 7, 20261
Sources: FMCSA SAFER · L&I · NHTSA vPIC