Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBDP9X5MD748942 · Truck-Tractor · TRUCK
Carriers run under3
24 mo
Inspections5
all-time
OOS inspections0
of 5
First seen07/03/2024
IN
Last seen07/10/2026
AL
Inspected under 3 different carriers in 24 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
1XPBDP9X5MD748942
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
07/14/2026
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 · 07/03/2024 – 07/10/2026

DateStateLevelViol.OOSCarrier (DOT)Plate
07/10/2026ALIII · Driver-only1—FRITH TRANSPORT LLC 40949941227688/AL
07/10/2026ALIII · Driver-only1—FRITH TRANSPORT LLC 40949941227688/AL
04/21/2026ALIII · Driver-only0—FRITH TRANSPORT LLC 40949941227688/AL
09/15/2025ALIII · Driver-only2—KAMYON CARRIERS LLC 319745922A0YA9/AL
07/03/2024INI · Full1—WEL COMPANIES INC 16604622399Z/WI
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
FRITH TRANSPORT LLC409499404/21/202607/10/20263GA
KAMYON CARRIERS LLC319745909/15/202509/15/20251TX
WEL COMPANIES INC16604607/03/202407/03/20241WI
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.
1227688AL1FRITH TRANSPORT LLC04/21/2026 → 07/10/20263
22A0YA9AL—KAMYON CARRIERS LLC09/15/2025 → 09/15/20251
22399ZWI—WEL COMPANIES INC07/03/2024 → 07/03/20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 07/14/2026