Equipment unit · VIN-decoded · NHTSA vPIC

2018 Peterbilt 579

1XPBDP9X2JD488429 · Truck-Tractor · TRUCK
Carriers run under2
31 mo
Inspections4
all-time
OOS inspections1
of 4
First seenNov 22, 2023
AZ
Last seenJun 5, 2026
NM
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
1XPBDP9X2JD488429
Make
Peterbilt
Model
579
Model year
2018
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 12, 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 · Nov 22, 2023 – Jun 5, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 5, 2026NMI · Full6OOSUNITED FRONTLINERS INC 3630245ZP81801/CA
May 21, 2026CAII · Walk-around3—UNITED FRONTLINERS INC 3630245ZP81801/CA
Apr 10, 2025CAI · Full2—UNITED FRONTLINERS INC 3630245ZP45823/CA
Nov 22, 2023AZIII · Driver-only1—AR GRAND CARRIERS INC 1649229YP48548/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
UNITED FRONTLINERS INC3630245Apr 10, 2025Jun 5, 20263CA
AR GRAND CARRIERS INC1649229Nov 22, 2023Nov 22, 20231CA
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.
ZP81801CA—UNITED FRONTLINERS INCMay 21, 2026 → Jun 5, 20262
ZP45823CA—UNITED FRONTLINERS INCApr 10, 2025 → Apr 10, 20251
YP48548CA—AR GRAND CARRIERS INCNov 22, 2023 → Nov 22, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026