Equipment unit · VIN-decoded · NHTSA vPIC

2020 Peterbilt 579

1XPBD49XXLD649434 · Truck-Tractor · TRUCK
Carriers run under2
15 mo
Inspections3
all-time
OOS inspections0
of 3
First seenSep 13, 2024
KS
Last seenDec 3, 2025
IA
Inspected under 2 different carriers in 15 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
1XPBD49XXLD649434
Make
Peterbilt
Model
579
Model year
2020
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 30, 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 · Sep 13, 2024 – Dec 3, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 3, 2025IAIII · Driver-only0—WILLIAM M SCHIERLMAN 535334258830/KS
Oct 23, 2024KSIII · Driver-only0—L & S TRANSPORT INC 1757712247767/KS
Sep 13, 2024KSII · Walk-around5—L & S TRANSPORT INC 1757712247767/KS
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
WILLIAM M SCHIERLMAN535334Dec 3, 2025Dec 3, 20251KS
L & S TRANSPORT INC1757712Sep 13, 2024Oct 23, 20242KS
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.
258830KS—WILLIAM M SCHIERLMANDec 3, 2025 → Dec 3, 20251
247767KS—L & S TRANSPORT INCSep 13, 2024 → Oct 23, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 30, 2026
2020 Peterbilt 579 — VIN 1XPBD49XXLD649434