Equipment unit · VIN-decoded · NHTSA vPIC

2023 Dragon Esp

1UNST4228PL187050 · Trailer · TRAILER
Carriers run under2
25 mo
Inspections4
all-time
OOS inspections0
of 4
First seenNov 26, 2023
LA
Last seenDec 24, 2025
LA
Inspected under 2 different carriers in 25 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
1UNST4228PL187050
Make
Dragon Esp
Model
Dragon ESP
Model year
2023
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
1UN

Deterministic · VIN positions 1–3.

Vehicle descriptor section
ST422

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1993 or 2023

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

North American serial sequence
187050

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
2023

Observed directly for this VIN via NHTSA vPIC.

Observed make
DRAGON ESP

Observed directly for this VIN via NHTSA vPIC.

Observed model
Dragon ESP

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 · Nov 26, 2023 – Dec 24, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 24, 2025LAIII · Driver-only0STATE LINE VACUUM SERVICES LLC 1569645J911301/LA
Sep 4, 2024LAII · Walk-around1STALLION INFRASTRUCTURE SERVICES LTD 1184736J911301/LA
Aug 1, 2024LAIII · Driver-only0STALLION INFRASTRUCTURE SERVICES LTD 1184736J911301/LA
Nov 26, 2023LAIII · Driver-only0STALLION INFRASTRUCTURE SERVICES LTD 1184736J911301/LA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
STATE LINE VACUUM SERVICES LLC1569645Dec 24, 2025Dec 24, 20251LA
STALLION INFRASTRUCTURE SERVICES LTD1184736Nov 26, 2023Sep 4, 20243TX
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.
J911301LASTATE LINE VACUUM SERVICES LLCDec 24, 2025Dec 24, 20251
J911301LASTALLION INFRASTRUCTURE SERVICES LTDNov 26, 2023Sep 4, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 8, 2026