Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBDP9X5MD731526 · Truck-Tractor · TRUCK
Carriers run under2
12 mo
Inspections4
all-time
OOS inspections0
of 4
First seen12/04/2023
MD
Last seen12/04/2024
VA
Inspected under 2 different carriers in 12 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
1XPBDP9X5MD731526
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.
02

Inspection history

Every roadside inspection of this VIN, newest first · 12/04/2023 – 12/04/2024

DateStateLevelViol.OOSCarrier (DOT)Plate
12/04/2024VAIII · Driver-only0—COWAN SYSTEMS LLC 5488803095463/IN
07/02/2024VAIII · Driver-only0—COWAN SYSTEMS LLC 5488803095463/IN
01/30/2024VAIII · Driver-only0—COWAN SYSTEMS LLC 5488803095463/IN
12/04/2023MDII · Walk-around0—TRI-TRUCKING LLC 2129756939F59/MD
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
COWAN SYSTEMS LLC54888001/30/202412/04/20243MD
TRI-TRUCKING LLC212975612/04/202312/04/20231MD
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.
3095463IN—COWAN SYSTEMS LLC01/30/2024 → 12/04/20243
939F59MD—TRI-TRUCKING LLC12/04/2023 → 12/04/20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 07/12/2026