Equipment unit · VIN-decoded · NHTSA vPIC

2021 Carmex

3A9DM4830MG019102 · TRAILER
Carriers run under3
3 mo
Inspections5
all-time
OOS inspections0
of 5
First seenAug 4, 2023
US
Last seenNov 20, 2023
TX
Inspected under 3 different carriers in 3 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
3A9DM4830MG019102
Make
Carmex
Model
Not decoded
Model year
2021
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 28, 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
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
1991 or 2021

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

North American serial sequence
019102

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
2021

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 · Aug 4, 2023 – Nov 20, 2023

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 20, 2023TXI · Full2JESSICA LIZETH ACOSTA SANCHEZ 374789696UN3A/MX
Aug 23, 2023TXII · Walk-around3ROBERTO CARLOS ALVAREZ MARTINEZ 328259496UN3A/MX
Aug 10, 2023USI · Full0LUIS ALBERTO MELENDEZ MACIEL 374782296UN3A/MX
Aug 8, 2023USI · Full1LUIS ALBERTO MELENDEZ MACIEL 374782296UN3A/TA
Aug 4, 2023USI · Full3JESSICA LIZETH ACOSTA SANCHEZ 374789696UN3A/TA
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
JESSICA LIZETH ACOSTA SANCHEZ3747896Aug 4, 2023Nov 20, 20232TA
ROBERTO CARLOS ALVAREZ MARTINEZ3282594Aug 23, 2023Aug 23, 20231TA
LUIS ALBERTO MELENDEZ MACIEL3747822Aug 8, 2023Aug 10, 20232TA
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.
96UN3AMXJESSICA LIZETH ACOSTA SANCHEZNov 20, 2023Nov 20, 20231
96UN3AMXROBERTO CARLOS ALVAREZ MARTINEZAug 23, 2023Aug 23, 20231
96UN3AMXLUIS ALBERTO MELENDEZ MACIELAug 10, 2023Aug 10, 20231
96UN3ATALUIS ALBERTO MELENDEZ MACIELAug 8, 2023Aug 8, 20231
96UN3ATAJESSICA LIZETH ACOSTA SANCHEZAug 4, 2023Aug 4, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026