Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYDP9X6MJ437019 · Truck-Tractor · TRUCK
Carriers run under3
22 mo
Inspections6
all-time
OOS inspections2
of 6
First seen07/31/2024
MI
Last seen05/27/2026
CA
Inspected under 3 different carriers in 22 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
1XKYDP9X6MJ437019
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
06/24/2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
02

Inspection history

Every roadside inspection of this VIN, newest first · 07/31/2024 – 05/27/2026

DateStateLevelViol.OOSCarrier (DOT)Plate
05/27/2026CAII · Walk-around2OOSRUDOLPH FREIGHT SYSTEMS INC 468962J5481HY/TN
02/27/2026VAII · Walk-around0—RUDOLPH FREIGHT SYSTEMS INC 468962J5481HY/TN
05/05/2025MTII · Walk-around2OOSMERCER TRANSPORTATION COMPANY INC 1547123771747/IN
02/04/2025MTI · Full0—MERCER TRANSPORTATION COMPANY INC 1547123771747/IN
01/21/2025NMIII · Driver-only0—MERCER TRANSPORTATION COMPANY INC 1547123771747/IN
07/31/2024MIIII · Driver-only1—HEARTLAND EXPRESS INC OF IOWA 134697DH3691/IA
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
RUDOLPH FREIGHT SYSTEMS INC46896202/27/202605/27/20262TN
MERCER TRANSPORTATION COMPANY INC15471201/21/202505/05/20253KY
HEARTLAND EXPRESS INC OF IOWA13469707/31/202407/31/20241IA
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.
J5481HYTN—RUDOLPH FREIGHT SYSTEMS INC02/27/2026 → 05/27/20262
3771747IN—MERCER TRANSPORTATION COMPANY INC01/21/2025 → 05/05/20253
DH3691IA—HEARTLAND EXPRESS INC OF IOWA07/31/2024 → 07/31/20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 06/24/2026