Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBDP9X6PD879706 · Truck-Tractor · TRUCK
Carriers run under2
30 mo
Inspections6
all-time
OOS inspections0
of 6
First seenJul 17, 2023
AR
Last seenJan 16, 2026
LA
Inspected under 2 different carriers in 30 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
1XPBDP9X6PD879706
Make
Peterbilt
Model
579
Model year
2023
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 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 · Jul 17, 2023 – Jan 16, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 16, 2026LAIII · Driver-only3—ROAD KING TRUCK LINES INC 3439519ZP41585/CA
Dec 18, 2025NMIII · Driver-only0—AMBAY LOGISTICS INC 2549056ZP41585/CA
Jun 4, 2025ARIII · Driver-only0—ROAD KING TRUCK LINES INC 3439519ZP41585/CA
Feb 17, 2025INI · Full4—ROAD KING TRUCK LINES INC 3439519ZP41585/CA
Aug 12, 2024WIIII · Driver-only1—ROAD KING TRUCK LINES INC 3439519YP79407/CA
Jul 17, 2023ARII · Walk-around0—ROAD KING TRUCK LINES INC 3439519YP79407/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROAD KING TRUCK LINES INC3439519Jul 17, 2023Jan 16, 20265CA
AMBAY LOGISTICS INC2549056Dec 18, 2025Dec 18, 20251IN
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.
ZP41585CA—ROAD KING TRUCK LINES INCFeb 17, 2025 → Jan 16, 20263
ZP41585CA—AMBAY LOGISTICS INCDec 18, 2025 → Dec 18, 20251
YP79407CA—ROAD KING TRUCK LINES INCJul 17, 2023 → Aug 12, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 25, 2026