Equipment unit · VIN-decoded · NHTSA vPIC

2023 Carmex

3A9DM4836PG019190 · TRAILER
Carriers run under4
18 mo
Inspections6
all-time
OOS inspections3
of 6
First seenOct 6, 2023
TX
Last seenApr 23, 2025
TX
Inspected under 4 different carriers in 18 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
3A9DM4836PG019190
Make
Carmex
Model
Not decoded
Model year
2023
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 25, 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
3A9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
DM483

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

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
019190

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
CARMEX

Observed directly for this VIN via NHTSA vPIC.

Observed model
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Not established

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 · Oct 6, 2023 – Apr 23, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 23, 2025TXIII · Driver-only0ALBERTO VAZQUEZ PEREZ 326016944UM9T/MX
Mar 28, 2025TXII · Walk-around6ALBERTO VAZQUEZ PEREZ 326016944UM9T/MX
May 16, 2024TXI · Full14OOSYOLANDA MARES LUCIO 371088144UM9T/MX
Mar 28, 2024TXI · Full8OOSLUIS ALBERTO MELENDEZ MACIEL 374782244UM9T/MX
Mar 15, 2024TXI · Full7YOLANDA MARES LUCIO 371088144UM9T/MX
Oct 6, 2023TXI · Full5OOSJULIO RODOLFO GONZALEZ OLVEDA 292750844UM9T/MX
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ALBERTO VAZQUEZ PEREZ3260169Mar 28, 2025Apr 23, 20252TA
YOLANDA MARES LUCIO3710881Mar 15, 2024May 16, 20242TA
LUIS ALBERTO MELENDEZ MACIEL3747822Mar 28, 2024Mar 28, 20241TA
JULIO RODOLFO GONZALEZ OLVEDA2927508Oct 6, 2023Oct 6, 20231MX
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.
44UM9TMXALBERTO VAZQUEZ PEREZMar 28, 2025Apr 23, 20252
44UM9TMXYOLANDA MARES LUCIOMar 15, 2024May 16, 20242
44UM9TMXLUIS ALBERTO MELENDEZ MACIELMar 28, 2024Mar 28, 20241
44UM9TMXJULIO RODOLFO GONZALEZ OLVEDAOct 6, 2023Oct 6, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 25, 2026