Equipment unit · VIN-decoded · NHTSA vPIC

2020 Carmex

3A9DM3428LG019421 · TRAILER
Carriers run under3
1 mo
Inspections4
all-time
OOS inspections1
of 4
First seenJan 13, 2024
TX
Last seenFeb 21, 2024
US
Inspected under 3 different carriers in 1 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
3A9DM3428LG019421
Make
Carmex
Model
Not decoded
Model year
2020
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 12, 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
DM342

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1990 or 2020

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

North American serial sequence
019421

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
2020

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 · Jan 13, 2024 – Feb 21, 2024

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 21, 2024USI · Full2LUIS ALBERTO MELENDEZ MACIEL 374782246UF8A/MX
Feb 21, 2024TXI · Full4JESSICA LIZETH ACOSTA SANCHEZ 374789646UF6A/MX
Jan 24, 2024TXII · Walk-around2JESSICA LIZETH ACOSTA SANCHEZ 374789646UF6A/MX
Jan 13, 2024TXI · Full7OOSROBERTO CARLOS ALVAREZ MARTINEZ 328259446UF6A/MX
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
LUIS ALBERTO MELENDEZ MACIEL3747822Feb 21, 2024Feb 21, 20241TA
JESSICA LIZETH ACOSTA SANCHEZ3747896Jan 24, 2024Feb 21, 20242TA
ROBERTO CARLOS ALVAREZ MARTINEZ3282594Jan 13, 2024Jan 13, 20241TA
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.
46UF8AMXLUIS ALBERTO MELENDEZ MACIELFeb 21, 2024Feb 21, 20241
46UF6AMXJESSICA LIZETH ACOSTA SANCHEZJan 24, 2024Feb 21, 20242
46UF6AMXROBERTO CARLOS ALVAREZ MARTINEZJan 13, 2024Jan 13, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026