Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBDP9XXMD742652 · Truck-Tractor · TRUCK
Carriers run under2
31 mo
Inspections5
all-time
OOS inspections0
of 5
First seenSep 21, 2023
OH
Last seenApr 1, 2026
LA
Inspected under 2 different carriers in 31 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
1XPBDP9XXMD742652
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
Jun 29, 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 21, 2023 – Apr 1, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 1, 2026LAIII · Driver-only1—HARPER LOGISTICS INC 439160R767705/TX
May 6, 2025LAIII · Driver-only2—HARPER LOGISTICS INC 439160R767705/TX
Mar 17, 2025LAIII · Driver-only2—HARPER LOGISTICS INC 439160R767700/TX
Jul 2, 2024ALI · Full1—PAM TRANSPORT INC 1797523050779/IN
Sep 21, 2023OHII · Walk-around0—PAM TRANSPORT INC 1797523050779/IN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HARPER LOGISTICS INC439160Mar 17, 2025Apr 1, 20263TX
PAM TRANSPORT INC179752Sep 21, 2023Jul 2, 20242AR
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.
R767705TX—HARPER LOGISTICS INCMay 6, 2025 → Apr 1, 20262
R767700TX—HARPER LOGISTICS INCMar 17, 2025 → Mar 17, 20251
3050779IN—PAM TRANSPORT INCSep 21, 2023 → Jul 2, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 29, 2026