Equipment unit · VIN-decoded · NHTSA vPIC

2024 Kenworth T680

1XKYD49X4RJ344635 · Truck-Tractor · TRUCK
Carriers run under2
19 mo
Inspections6
all-time
OOS inspections0
of 6
First seenFeb 22, 2024
TX
Last seenSep 11, 2025
CA
Inspected under 2 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
1XKYD49X4RJ344635
Make
Kenworth
Model
T680
Model year
2024
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 24, 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
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
YD49X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1994 or 2024

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

North American serial sequence
344635

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
KENWORTH

Prefix basis · 43,483 decoded VINs at 100.0% prefix purity.

Model
T680

Prefix basis · 43,483 decoded VINs at 100.0% 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
2024

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T680

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 · Feb 22, 2024 – Sep 11, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 11, 2025CAIII · Driver-only0HEARTLAND EXPRESS INC OF IOWA 134697FZ4623/IA
Sep 1, 2025CAII · Walk-around1HEARTLAND EXPRESS INC OF IOWA 134697FZ4623/IA
Feb 15, 2025COIII · Driver-only0HEARTLAND EXPRESS INC OF IOWA 134697FZ4623/IA
Feb 5, 2025CAIII · Driver-only0HEARTLAND EXPRESS INC OF IOWA 134697FZ4623/IA
Nov 14, 2024CAIII · Driver-only1HEARTLAND EXPRESS INC OF IOWA 13469725KT1C/MO
Feb 22, 2024TXI · Full4CONTRACT FREIGHTERS INC 702892K5TIC/MO
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HEARTLAND EXPRESS INC OF IOWA134697Nov 14, 2024Sep 11, 20255IA
CONTRACT FREIGHTERS INC70289Feb 22, 2024Feb 22, 20241MO
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.
FZ4623IAHEARTLAND EXPRESS INC OF IOWAFeb 5, 2025Sep 11, 20254
25KT1CMOHEARTLAND EXPRESS INC OF IOWANov 14, 2024Nov 14, 20241
2K5TICMOCONTRACT FREIGHTERS INCFeb 22, 2024Feb 22, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026