Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBD49X6PD850446 · Truck-Tractor · TRUCK
Carriers run under2
37 mo
Inspections8
all-time
OOS inspections0
of 8
First seenJun 28, 2023
CA
Last seenJul 2, 2026
CA
Inspected under 2 different carriers in 37 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
1XPBD49X6PD850446
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 21, 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 · Jun 28, 2023 – Jul 2, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 2, 2026CAI · Full0—JB CARRIER INC 2572555ZP68853/CA
May 27, 2026CAII · Walk-around0—JB CARRIER INC 2572555ZP68853/CA
Feb 12, 2026CAIII · Driver-only0—JB CARRIER INC 2572555ZP68853/CA
Jan 25, 2026CAIII · Driver-only0—JB CARRIER INC 2572555ZP68853/CA
Jan 13, 2026CAI · Full1—JB CARRIER INC 2572555ZP68853/CA
Aug 6, 2025CAI · Full1—JB CARRIER INC 2572555NONE/CA
Sep 6, 2023AZIII · Driver-only1—TRANSBAY XPRESS INC 1357829YP79906/CA
Jun 28, 2023CAII · Walk-around1—TRANSBAY XPRESS INC 1357829YP79906/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
JB CARRIER INC2572555Aug 6, 2025Jul 2, 20266CA
TRANSBAY XPRESS INC1357829Jun 28, 2023Sep 6, 20232CA
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.
ZP68853CA1JB CARRIER INCJan 13, 2026 → Jul 2, 20265
NONECA—JB CARRIER INCAug 6, 2025 → Aug 6, 20251
YP79906CA—TRANSBAY XPRESS INCJun 28, 2023 → Sep 6, 20232
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026