Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBD49X8PD872996 · Truck-Tractor · TRUCK
Carriers run under3
18 mo
Inspections10
all-time
OOS inspections0
of 10
First seenJul 19, 2024
IL
Last seenJan 28, 2026
WY
Inspected under 3 different carriers in 18 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
1XPBD49X8PD872996
Make
Peterbilt
Model
579
Model year
2023
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 18, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
1XP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
BD49X

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1993 or 2023

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
872996

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
PETERBILT

Prefix basis · 26,166 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 26,166 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2023

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
579

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jul 19, 2024 – Jan 28, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 28, 2026WYIII · Driver-only2ON THE WAY CARGO INC 4202406ZP47448/CA
Jan 25, 2026ILIII · Driver-only0JOSAN FREIGHTLINES INC 4340861ZP47448/CA
Sep 9, 2025KYI · Full1JOSAN FREIGHTLINES INC 4340861ZP47448/CA
Aug 6, 2025CAII · Walk-around1JOSAN FREIGHTLINES INC 4340861ZP47448/CA
Jul 29, 2025SDIII · Driver-only0JOSAN FREIGHTLINES INC 4340861ZP47448/CA
Jul 9, 2025WIIII · Driver-only1JOSAN FREIGHTLINES INC 4340861ZP47448/CA
May 17, 2025WYI · Full2JOSAN FREIGHTLINES INC 4340861ZP47448/CA
Dec 15, 2024KSII · Walk-around0WERNER ENTERPRISES INC 53467W39602/NE
Aug 14, 2024CAII · Walk-around2WERNER ENTERPRISES INC 53467W39602/NE
Jul 19, 2024ILIII · Driver-only0WERNER ENTERPRISES INC 53467W39602/NE
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ON THE WAY CARGO INC4202406Jan 28, 2026Jan 28, 20261CA
JOSAN FREIGHTLINES INC4340861May 17, 2025Jan 25, 20266CA
WERNER ENTERPRISES INC53467Jul 19, 2024Dec 15, 20243NE
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.
ZP47448CAON THE WAY CARGO INCJan 28, 2026Jan 28, 20261
ZP47448CAJOSAN FREIGHTLINES INCMay 17, 2025Jan 25, 20266
W39602NEWERNER ENTERPRISES INCJul 19, 2024Dec 15, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 18, 2026