Equipment unit · VIN-decoded · NHTSA vPIC

2021 Freightliner SD122

3AKJGNDR5MDMP8913 · Truck-Tractor · TRUCK
Carriers run under1
33 mo
Inspections4
all-time
OOS inspections1
of 4
First seenJul 13, 2023
TX
Last seenApr 14, 2026
TX
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
3AKJGNDR5MDMP8913
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
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
3AK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
JGNDR

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

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
MP8913

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.

Make
FREIGHTLINER

Prefix basis · 876 decoded VINs at 96.1% prefix purity.

Model
SD122

Prefix basis · 876 decoded VINs at 96.1% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

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

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jul 13, 2023 – Apr 14, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 14, 2026TXIII · Driver-only0CULLEN DIXON LTD INC 19464131M56137/TX
May 9, 2025TXII · Walk-around2CULLEN DIXON LTD INC 19464131M56137/TX
Dec 31, 2024TXII · Walk-around5OOSCULLEN DIXON LTD INC 19464131M98114/TX
Jul 13, 2023TXII · Walk-around0CULLEN DIXON LTD INC 19464131M98114/TX
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
CULLEN DIXON LTD INC1946413Jul 13, 2023Apr 14, 20264TX
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.
1M56137TXCULLEN DIXON LTD INCMay 9, 2025Apr 14, 20262
1M98114TXCULLEN DIXON LTD INCJul 13, 2023Dec 31, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026