Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBDP9X4MD743439 · Truck-Tractor · TRUCK

Carriers run under3

23 mo

Inspections4

all-time

OOS inspections0

of 4

First seen08/08/2023

Last seen07/24/2025

Inspected under 3 different carriers in 23 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.

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN: 1XPBDP9X4MD743439
Make: Peterbilt
Model: 579
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: 07/12/2026

vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.

Inspection history

Every roadside inspection of this VIN, newest first · 08/08/2023 – 07/24/2025

Date	State	Level	Viol.	OOS	Carrier (DOT)	Plate
07/24/2025	IL	II · Walk-around	0	—	AMIGOS LOGISTICS L L C 1731111	14987Z/WI
08/08/2024	GA	II · Walk-around	1	—	WELEX LOGISTICS INC 3700808	14987Z/WI
06/20/2024	LA	II · Walk-around	0	—	WELEX LOGISTICS INC 3700808	14987Z/WI
08/08/2023	IN	III · Driver-only	1	—	ON TIME EXPRESS INC 1217400	14987Z/WI

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

Carrier	DOT	First seen	Last seen	Insp.	State
AMIGOS LOGISTICS L L C	1731111	07/24/2025	07/24/2025	1	IL
WELEX LOGISTICS INC	3700808	06/20/2024	08/08/2024	2	IL
ON TIME EXPRESS INC	1217400	08/08/2023	08/08/2023	1	IL

Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.

Plate & unit-number history

The same truck under different plate registrations across carriers

Plate	State / prov.	Unit no.	Carrier	Date range	Insp.
14987Z	WI	—	AMIGOS LOGISTICS L L C	07/24/2025 → 07/24/2025	1
14987Z	WI	—	WELEX LOGISTICS INC	06/20/2024 → 08/08/2024	2
14987Z	WI	—	ON TIME EXPRESS INC	08/08/2023 → 08/08/2023	1

Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 07/12/2026