Equipment unit · VIN-decoded · NHTSA vPIC

2020 Kenworth T680

1XKYD49X4LJ354640 · Truck-Tractor · TRUCK
Carriers run under1
10 mo
Inspections4
all-time
OOS inspections0
of 4
First seenMar 11, 2024
KY
Last seenJan 16, 2025
TX
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XKYD49X4LJ354640
Make
Kenworth
Model
T680
Model year
2020
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 10, 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
1990 or 2020

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

North American serial sequence
354640

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
2020

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 · Mar 11, 2024 – Jan 16, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 16, 2025TXII · Walk-around1ROCKING PY SERVICES INC 3562075R712468/TX
Sep 24, 2024TXII · Walk-around0ROCKING PY SERVICES INC 3562075R712468/TX
Sep 4, 2024MDII · Walk-around1ROCKING PY SERVICES INC 3562075R712468/TX
Mar 11, 2024KYIII · Driver-only2ROCKING PY SERVICES INC 3562075R712468/TX
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROCKING PY SERVICES INC3562075Mar 11, 2024Jan 16, 20254TX
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.
R712468TXROCKING PY SERVICES INCMar 11, 2024Jan 16, 20254
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 10, 2026