Equipment unit · VIN-decoded · NHTSA vPIC

1999 Peterbilt 379

1XP5DB9X4XD475433 · Truck-Tractor · TRUCK
Carriers run under2
32 mo
Inspections6
all-time
OOS inspections0
of 6
First seen08/28/2023
CO
Last seen04/27/2026
IA
Inspected under 2 different carriers in 32 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
1XP5DB9X4XD475433
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 · 08/28/2023 – 04/27/2026

DateStateLevelViol.OOSCarrier (DOT)Plate
04/27/2026IAII · Walk-around7—MATTHEW RAYMOND CASPER 128089670382Z/WI
03/10/2026IAIII · Driver-only1—MATTHEW RAYMOND CASPER 128089670382Z/WI
08/19/2025IAIII · Driver-only1—MATTHEW RAYMOND CASPER 128089670382Z/WI
05/22/2025IAIII · Driver-only2—MATTHEW RAYMOND CASPER 128089670382Z/WI
08/29/2023NMII · Walk-around0—WIESCAMP LLC 323865222XBF/CO
08/28/2023COIII · Driver-only0—WIESCAMP LLC 323865222XBF/CO
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MATTHEW RAYMOND CASPER128089605/22/202504/27/20264WI
WIESCAMP LLC32386508/28/202308/29/20232CO
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.
70382ZWI—MATTHEW RAYMOND CASPER05/22/2025 → 04/27/20264
222XBFCO—WIESCAMP LLC08/28/2023 → 08/29/20232
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 06/24/2026