Equipment unit · VIN-decoded · NHTSA vPIC

2028 Utility Trailer Manufacturer

1UYFS2487WA221504 · Trailer · TRAILER
Axles · 2 axlesBody · FlatLength · 48 ft
Carriers run under2
24 mo
Inspections4
all-time
OOS inspections3
of 4
First seenJul 17, 2023
CA
Last seenJul 20, 2025
CA
Inspected under 2 different carriers in 24 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

VIN
1UYFS2487WA221504
Make
Utility Trailer Manufacturer
Model
Utility Trailer Manufacturer
Model year
2028
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 8, 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
1UY

Deterministic · VIN positions 1–3.

Vehicle descriptor section
FS248

Deterministic · VIN positions 4–8.

Check digit
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
1998 or 2028

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

North American serial sequence
221504

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
UTILITY TRAILER MANUFACTURER

Prefix basis · 6,063 decoded VINs at 100.0% prefix purity.

Model
Utility Trailer Manufacturer

Prefix basis · 6,063 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.

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
2028

Observed directly for this VIN via NHTSA vPIC.

Observed make
UTILITY TRAILER MANUFACTURER

Observed directly for this VIN via NHTSA vPIC.

Observed model
Utility Trailer Manufacturer

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.

VIN-level rule claims

Rules published for individual VIN positions beyond the prefix — applied with the WMI, prefix, and model-year guards each rule was validated under. Year-scoped rules were checked against model year 2028, established by the federal observation agreeing with a position-10 candidate.

Axle configuration
2 axles

Manufacturer-published position rule · WMI/prefix/year guards applied by the store.

Body family
Flat

Manufacturer-published position rule · WMI/prefix/year guards applied by the store.

Trailer length
48 ft

Manufacturer-published position rule · WMI/prefix/year guards applied by the store.

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 · Jul 17, 2023 – Jul 20, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 20, 2025CAII · Walk-around3OOSMONZON & SON ENTERPRISES INC 27091924TB4869/CA
Jun 14, 2024CAI · Full2OOSZL1 LOGISTICS INC 41171884TB4869/CA
Dec 1, 2023CAV · Vehicle-only0MONZON & SON ENTERPRISES INC 27091924TB4869/CA
Jul 17, 2023CAII · Walk-around3OOSMONZON & SON ENTERPRISES INC 27091924TB4869/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MONZON & SON ENTERPRISES INC2709192Jul 17, 2023Jul 20, 20253CA
ZL1 LOGISTICS INC4117188Jun 14, 2024Jun 14, 20241CA
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.
4TB4869CAMONZON & SON ENTERPRISES INCJul 17, 2023Jul 20, 20253
4TB4869CAZL1 LOGISTICS INCJun 14, 2024Jun 14, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 8, 2026