Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBDP9X9MD707780 · Truck-Tractor · TRUCK
Carriers run under2
20 mo
Inspections6
all-time
OOS inspections0
of 6
First seen03/26/2024
IN
Last seen11/03/2025
MA
Inspected under 2 different carriers in 20 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
1XPBDP9X9MD707780
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
06/25/2026
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 · 03/26/2024 – 11/03/2025

DateStateLevelViol.OOSCarrier (DOT)Plate
11/03/2025MAIII · Driver-only1—SI LOGISTICS CARGO LLC 4408079SPG516748/IL
09/19/2025NCIII · Driver-only0—SI LOGISTICS LLC 3545635P1229618/IL
08/05/2025DEIII · Driver-only1—SI LOGISTICS LLC 3545635SPG516748/IL
01/13/2025CTIII · Driver-only2—SI LOGISTICS LLC 3545635P1229618/IL
09/26/2024NYII · Walk-around1—SI LOGISTICS LLC 3545635P-1229618/IL
03/26/2024INIII · Driver-only1—SI LOGISTICS LLC 3545635P1229618/IL
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SI LOGISTICS CARGO LLC440807911/03/202511/03/20251IL
SI LOGISTICS LLC354563503/26/202409/19/20255IL
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.
SPG516748IL—SI LOGISTICS CARGO LLC11/03/2025 → 11/03/20251
P1229618IL—SI LOGISTICS LLC03/26/2024 → 09/19/20253
SPG516748IL—SI LOGISTICS LLC08/05/2025 → 08/05/20251
P-1229618IL—SI LOGISTICS LLC09/26/2024 → 09/26/20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 06/25/2026