Equipment unit · VIN-decoded · NHTSA vPIC

1999 Peterbilt 379

1XP5DB9X4XD509712 · Truck-Tractor · TRUCK
Carriers run under2
28 mo
Inspections6
all-time
OOS inspections2
of 6
First seen06/20/2023
WA
Last seen10/24/2025
CA
Inspected under 2 different carriers in 28 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
1XP5DB9X4XD509712
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
06/24/2026
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 · 06/20/2023 – 10/24/2025

DateStateLevelViol.OOSCarrier (DOT)Plate
10/24/2025CAII · Walk-around0—SOPTICH TRUCKING LLC 3637969RP17370/WA
09/16/2025ORII · Walk-around1OOSSOPTICH TRUCKING LLC 3637969RP17370WA/WA
09/16/2025CAII · Walk-around3OOSSOPTICH TRUCKING LLC 3637969RP17370/WA
09/15/2024CAII · Walk-around0—SOPTICH TRUCKING LLC 3637969RP17370/WA
06/22/2023MTIII · Driver-only0—MARK ALCORN 252054898642RP/WA
06/20/2023WAIII · Driver-only0—MARK ALCORN 252054898642RP/WA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SOPTICH TRUCKING LLC363796909/15/202410/24/20254WA
MARK ALCORN252054806/20/202306/22/20232WA
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.
RP17370WA—SOPTICH TRUCKING LLC09/15/2024 → 10/24/20253
RP17370WAWA—SOPTICH TRUCKING LLC09/16/2025 → 09/16/20251
98642RPWA—MARK ALCORN06/20/2023 → 06/22/20232
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 06/24/2026