Equipment unit · VIN-decoded · NHTSA vPIC

2021 Freightliner SD122

3AKRGND16MDMJ9494 · Truck-Tractor · TRUCK
Carriers run under2
33 mo
Inspections30
all-time
OOS inspections4
of 30
First seenJul 8, 2023
TX
Last seenApr 16, 2026
AZ
Inspected under 2 different carriers in 33 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
3AKRGND16MDMJ9494
Make
Freightliner
Model
SD122
Model year
2021
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 14, 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
3AK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
RGND1

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

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
MJ9494

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
FREIGHTLINER

Observed directly for this VIN via NHTSA vPIC.

Observed model
SD122

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

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 · Jul 8, 2023 – Apr 16, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 16, 2026AZII · Walk-around0SOUTHERN HEAVY HAUL LOGISTICS INC 3479268R518606/TX
Apr 14, 2026AZIII · Driver-only0SOUTHERN HEAVY HAUL LOGISTICS INC 3479268R518606/TX
Apr 13, 2026AZIII · Driver-only1SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Apr 10, 2026AZII · Walk-around0SOUTHERN HEAVY HAUL LOGISTICS INC 3479268R518606/TX
Apr 8, 2026AZIII · Driver-only0SOUTHERN HEAVY HAUL LOGISTICS INC 3479268R518606/TX
Apr 1, 2026TXI · Full0SOUTHERN HEAVY HAUL LOGISTICS INC 3479268R518606/TX
Mar 30, 2026TXI · Full3SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Mar 3, 2026ORII · Walk-around16OOSSOUTHERN HEAVY HAUL LOGISTICS INC 3479268R518606/TX
Feb 13, 2026AZIII · Driver-only0SOUTHERN HEAVY HAUL LOGISTICS INC 3479268R518606/TX
Feb 9, 2026AZIII · Driver-only0SOUTHERN HEAVY HAUL LOGISTICS INC 3479268R518606/TX
Dec 22, 2025MOII · Walk-around1SOUTHERN HEAVY HAUL LOGISTICS INC 3479268R518606/TX
Dec 13, 2025INII · Walk-around0SOUTHERN HEAVY HAUL LOGISTICS INC 3479268R518606/TX
Oct 13, 2025AZII · Walk-around0SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Aug 1, 2025MOII · Walk-around11SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Mar 10, 2025MOII · Walk-around5OOSSOUTHERN HEAVY HAUL LOGISTICS INC 3479268R518606/TX
Jan 30, 2025AZIII · Driver-only1SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Jan 29, 2025AZII · Walk-around1SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Jan 17, 2025TXI · Full1OOSSOUTHERN HEAVY HAUL INC 2349930R518606/TX
Dec 20, 2024AZIII · Driver-only0SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Dec 19, 2024AZII · Walk-around0SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Nov 25, 2024INII · Walk-around0SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Nov 18, 2024MOII · Walk-around1SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Jun 7, 2024MOII · Walk-around0SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Feb 28, 2024CAII · Walk-around0SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Feb 24, 2024CAII · Walk-around0SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Feb 22, 2024CAI · Full6SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Feb 21, 2024AZIII · Driver-only0SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Feb 20, 2024AZIII · Driver-only0SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Feb 19, 2024AZIII · Driver-only0SOUTHERN HEAVY HAUL INC 2349930R518606/TX
Jul 8, 2023TXII · Walk-around1OOSSOUTHERN HEAVY HAUL INC 2349930R518606/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SOUTHERN HEAVY HAUL LOGISTICS INC3479268Mar 10, 2025Apr 16, 202611TX
SOUTHERN HEAVY HAUL INC2349930Jul 8, 2023Apr 13, 202619TX
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.
R518606TXSOUTHERN HEAVY HAUL LOGISTICS INCMar 10, 2025Apr 16, 202611
R518606TXSOUTHERN HEAVY HAUL INCJul 8, 2023Apr 13, 202619
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 14, 2026