Equipment unit · VIN-decoded · NHTSA vPIC

2020 Peterbilt 579

1XPBDP9X1LD666155 · Truck-Tractor · TRUCK
Carriers run under2
24 mo
Inspections4
all-time
OOS inspections1
of 4
First seen09/12/2023
MA
Last seen09/02/2025
NY
Inspected under 2 different carriers in 24 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
1XPBDP9X1LD666155
Make
Peterbilt
Model
579
Model year
2020
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
07/12/2026
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 · 09/12/2023 – 09/02/2025

DateStateLevelViol.OOSCarrier (DOT)Plate
09/02/2025NYIII · Driver-only8—MASTER CARRIERS LLC 4226536DG07AJ/FL
04/11/2025KYIII · Driver-only2—MASTER CARRIERS LLC 4226536DG07AJ/FL
01/29/2025TNII · Walk-around1OOSMASTER CARRIERS LLC 4226536DG07AJ/FL
09/12/2023MAIII · Driver-only1—COWAN SYSTEMS LLC 5488803095259/IN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MASTER CARRIERS LLC422653601/29/202509/02/20253FL
COWAN SYSTEMS LLC54888009/12/202309/12/20231MD
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.
DG07AJFL—MASTER CARRIERS LLC01/29/2025 → 09/02/20253
3095259IN—COWAN SYSTEMS LLC09/12/2023 → 09/12/20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 07/12/2026
2020 Peterbilt 579 — VIN 1XPBDP9X1LD666155