Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBDP9X2MD734299 · Truck-Tractor · TRUCK
Carriers run under2
33 mo
Inspections5
all-time
OOS inspections2
of 5
First seenJul 12, 2023
KS
Last seenApr 1, 2026
CO
Inspected under 2 different carriers in 33 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
1XPBDP9X2MD734299
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 · Jul 12, 2023 – Apr 1, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 1, 2026COII · Walk-around0—BIG BOYZ TRANS INC 34925193042098/IN
Sep 30, 2023MOIII · Driver-only0—DECKER TRUCK LINE INC 53824FJ1025/IA
Sep 29, 2023ARIII · Driver-only1—DECKER TRUCK LINE INC 53824FJ1025/IA
Aug 13, 2023WAII · Walk-around5OOSDECKER TRUCK LINE INC 53824FJ1025/IA
Jul 12, 2023KSIII · Driver-only4OOSDECKER TRUCK LINE INC 53824FJ1025/IA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BIG BOYZ TRANS INC3492519Apr 1, 2026Apr 1, 20261IN
DECKER TRUCK LINE INC53824Jul 12, 2023Sep 30, 20234IA
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.
3042098IN—BIG BOYZ TRANS INCApr 1, 2026 → Apr 1, 20261
FJ1025IA—DECKER TRUCK LINE INCJul 12, 2023 → Sep 30, 20234
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 29, 2026