Equipment unit · VIN-decoded · NHTSA vPIC

1999 Peterbilt 379

1XP5DB9X9XN504564 · Truck-Tractor · TRUCK
Carriers run under2
29 mo
Inspections3
all-time
OOS inspections0
of 3
First seenDec 1, 2023
PA
Last seenMay 19, 2026
PA
Inspected under 2 different carriers in 29 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
1XP5DB9X9XN504564
Make
Peterbilt
Model
379
Model year
1999
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 30, 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 · Dec 1, 2023 – May 19, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 19, 2026PAIII · Driver-only1—ST ROCK TRANSPORT LLC 4460805AH82017/PA
Apr 23, 2025INIII · Driver-only2—LEWIS TRANSPORT LLC 3769340AH23889/PA
Dec 1, 2023PAIII · Driver-only0—LEWIS TRANSPORT LLC 3769340AH23889/PA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ST ROCK TRANSPORT LLC4460805May 19, 2026May 19, 20261PA
LEWIS TRANSPORT LLC3769340Dec 1, 2023Apr 23, 20252PA
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.
AH82017PA1ST ROCK TRANSPORT LLCMay 19, 2026 → May 19, 20261
AH23889PA—LEWIS TRANSPORT LLCDec 1, 2023 → Apr 23, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 30, 2026