Equipment unit · VIN-decoded · NHTSA vPIC

2020 Peterbilt 579

1XPBDP9X3LD639717 · Truck-Tractor · TRUCK
Carriers run under3
16 mo
Inspections3
all-time
OOS inspections2
of 3
First seenJan 31, 2024
PA
Last seenMay 21, 2025
LA
Inspected under 3 different carriers in 16 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
1XPBDP9X3LD639717
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
Jul 31, 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 · Jan 31, 2024 – May 21, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
May 21, 2025LAI · Full6OOSERC TRUCKING LLC 4193092R787944/TX
Oct 10, 2024TXII · Walk-around5OOSYOHR TRUCKING LLC 409114715S774M/TX
Jan 31, 2024PAIII · Driver-only3—WINDY CITY NATIONAL TRANS INC 2107840P1041677/IL
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ERC TRUCKING LLC4193092May 21, 2025May 21, 20251TX
YOHR TRUCKING LLC4091147Oct 10, 2024Oct 10, 20241TX
WINDY CITY NATIONAL TRANS INC2107840Jan 31, 2024Jan 31, 20241IL
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.
R787944TX—ERC TRUCKING LLCMay 21, 2025 → May 21, 20251
15S774MTX—YOHR TRUCKING LLCOct 10, 2024 → Oct 10, 20241
P1041677IL—WINDY CITY NATIONAL TRANS INCJan 31, 2024 → Jan 31, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 31, 2026