Equipment unit · VIN-decoded · NHTSA vPIC

2022 Carmex

3A9DM4839NG019276 · TRAILER
Carriers run under4
19 mo
Inspections10
all-time
OOS inspections3
of 10
First seenMay 3, 2024
US
Last seenDec 1, 2025
TX
Inspected under 4 different carriers in 19 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
3A9DM4839NG019276
Make
Carmex
Model
Not decoded
Model year
2022
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 19, 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
9 · valid

Deterministic · position 9; calculated value 9.

Model year candidates
1992 or 2022

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

North American serial sequence
019276

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
2022

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 · May 3, 2024 – Dec 1, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 1, 2025TXII · Walk-around2LUIS ALBERTO MELENDEZ MACIEL 374782299UM8F/MX
Jun 4, 2025TXI · Full3JESSICA LIZETH ACOSTA SANCHEZ 374789699UM8F/MX
Jun 4, 2025TXI · Full1LM TRANSPORTACIONES SA DE CV 100531299UM8F/MX
Jan 29, 2025TXII · Walk-around3JESSICA LIZETH ACOSTA SANCHEZ 374789699UM8F/MX
Jan 23, 2025TXI · Full2OOSROBERTO CARLOS ALVAREZ MARTINEZ 328259499UM8F/MX
Dec 23, 2024USII · Walk-around1JESSICA LIZETH ACOSTA SANCHEZ 374789699UM8F/MX
Dec 19, 2024TXI · Full7JESSICA LIZETH ACOSTA SANCHEZ 374789699UM8F/MX
Jun 6, 2024TXI · Full4ROBERTO CARLOS ALVAREZ MARTINEZ 328259499UM8F/MX
May 27, 2024USI · Full6OOSLUIS ALBERTO MELENDEZ MACIEL 374782299UM8F/MX
May 3, 2024USI · Full7OOSLUIS ALBERTO MELENDEZ MACIEL 374782299UM8F/MX
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
LUIS ALBERTO MELENDEZ MACIEL3747822May 3, 2024Dec 1, 20253TA
LM TRANSPORTACIONES SA DE CV1005312Jun 4, 2025Jun 4, 20251NL
JESSICA LIZETH ACOSTA SANCHEZ3747896Dec 19, 2024Jun 4, 20254TA
ROBERTO CARLOS ALVAREZ MARTINEZ3282594Jun 6, 2024Jan 23, 20252TA
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.
99UM8FMXLUIS ALBERTO MELENDEZ MACIELMay 3, 2024Dec 1, 20253
99UM8FMXLM TRANSPORTACIONES SA DE CVJun 4, 2025Jun 4, 20251
99UM8FMXJESSICA LIZETH ACOSTA SANCHEZDec 19, 2024Jun 4, 20254
99UM8FMXROBERTO CARLOS ALVAREZ MARTINEZJun 6, 2024Jan 23, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 19, 2026