Equipment unit · VIN-decoded · NHTSA vPIC

2015 Peterbilt 579

1XPBDP9X8FD266405 · Truck-Tractor · TRUCK
Carriers run under2
21 mo
Inspections6
all-time
OOS inspections0
of 6
First seenJun 25, 2024
CA
Last seenMar 25, 2026
AZ
Inspected under 2 different carriers in 21 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
1XPBDP9X8FD266405
Make
Peterbilt
Model
579
Model year
2015
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 25, 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
BDP9X

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1985 or 2015

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

North American serial sequence
266405

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 · 21,366 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 21,366 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
2015

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 · Jun 25, 2024 – Mar 25, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 25, 2026AZII · Walk-around9A R O TRUCKING INC 796471ZP07891/CA
Jan 16, 2026AZII · Walk-around2CALDERON EXPRESS INC 2585688ZP07891/CA
Jan 7, 2026CAI · Full1A R O TRUCKING INC 796471ZP07891/CA
Sep 24, 2025AZIII · Driver-only0CALDERON EXPRESS INC 2585688ZP07891/CA
Aug 8, 2025CAI · Full0CALDERON EXPRESS INC 2585688ZP07891/CA
Jun 25, 2024CAII · Walk-around0CALDERON EXPRESS INC 2585688ZP07891/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
A R O TRUCKING INC796471Jan 7, 2026Mar 25, 20262CA
CALDERON EXPRESS INC2585688Jun 25, 2024Jan 16, 20264CA
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.
ZP07891CAA R O TRUCKING INCJan 7, 2026Mar 25, 20262
ZP07891CACALDERON EXPRESS INCJun 25, 2024Jan 16, 20264
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 25, 2026