Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYD49XXMJ463718 · Truck-Tractor · TRUCK
Carriers run under2
21 mo
Inspections9
all-time
OOS inspections3
of 9
First seenNov 12, 2023
UT
Last seenAug 28, 2025
MS
Inspected under 2 different carriers in 21 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
1XKYD49XXMJ463718
Make
Kenworth
Model
T680
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 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
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
YD49X

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

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
463718

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
2021

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 · Nov 12, 2023 – Aug 28, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 28, 2025MSIV · Special0ROYAL BROTHER TRANSPORT INC 4131514ZP37066/CA
Aug 14, 2025ALII · Walk-around1ROYAL BROTHER TRANSPORT INC 4131514ZP37066/CA
Apr 20, 2025COIII · Driver-only0ROYAL BROTHER TRANSPORT INC 4131514ZP37066/CA
Jan 28, 2025NMIII · Driver-only0ROYAL BROTHER TRANSPORT INC 4131514ZP37066/CA
Jul 18, 2024SCII · Walk-around2OOSROYAL BROTHER TRANSPORT INC 4131514XP96388/CA
Jun 23, 2024NMII · Walk-around1ROYAL BROTHER TRANSPORT INC 4131514XP96388/CA
Apr 30, 2024MOII · Walk-around2OOSROYAL BROTHER TRANSPORT INC 4131514XP96388/CA
Dec 8, 2023TNIII · Driver-only1OOSROYAL ROAD LINE INC 3431980XP262326F/CA
Nov 12, 2023UTIII · Driver-only1ROYAL ROAD LINE INC 3431980XP96388/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROYAL BROTHER TRANSPORT INC4131514Apr 30, 2024Aug 28, 20257CA
ROYAL ROAD LINE INC3431980Nov 12, 2023Dec 8, 20232CA
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.
ZP37066CAROYAL BROTHER TRANSPORT INCJan 28, 2025Aug 28, 20254
XP96388CAROYAL BROTHER TRANSPORT INCApr 30, 2024Jul 18, 20243
XP262326FCAROYAL ROAD LINE INCDec 8, 2023Dec 8, 20231
XP96388CAROYAL ROAD LINE INCNov 12, 2023Nov 12, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 19, 2026