Equipment unit · VIN-decoded · NHTSA vPIC

2018 Keystone

4YDT29325J3155939 · Trailer · TRAILER
Carriers run under3
27 mo
Inspections3
all-time
OOS inspections0
of 3
First seenMay 3, 2024
IL
Last seenAug 10, 2026
PA
Inspected under 3 different carriers in 27 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
4YDT29325J3155939
Make
Keystone
Model
Keystone
Model year
2018
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 13, 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
4YD

Deterministic · VIN positions 1–3.

Vehicle descriptor section
T2932

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
1988 or 2018

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

North American serial sequence
155939

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.

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
2018

Observed directly for this VIN via NHTSA vPIC.

Observed make
KEYSTONE

Observed directly for this VIN via NHTSA vPIC.

Observed model
Keystone

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.

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 · May 3, 2024 – Aug 10, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 10, 2026PAIII · Driver-only1SUPREME PORT SERVICES LLC 3928818MJX8051/PA
Sep 9, 2025INIII · Driver-only2TOP CARGO TRANSPORTATION SERVICES LLC 4127749CX4885/OK
May 3, 2024ILII · Walk-around0DIRSHE EXPRESS LLC 3193468CX4885/OK
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SUPREME PORT SERVICES LLC3928818Aug 10, 2026Aug 10, 20261CA
TOP CARGO TRANSPORTATION SERVICES LLC4127749Sep 9, 2025Sep 9, 20251CA
DIRSHE EXPRESS LLC3193468May 3, 2024May 3, 20241OH
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.
MJX8051PA2SUPREME PORT SERVICES LLCAug 10, 2026Aug 10, 20261
CX4885OKTOP CARGO TRANSPORTATION SERVICES LLCSep 9, 2025Sep 9, 20251
CX4885OKDIRSHE EXPRESS LLCMay 3, 2024May 3, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 13, 2026