Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBD49X3PD866748 · Truck-Tractor · TRUCK
Carriers run under2
21 mo
Inspections8
all-time
OOS inspections0
of 8
First seenJun 16, 2023
CA
Last seenMar 26, 2025
CA
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
1XPBD49X3PD866748
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 21, 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
3 · valid

Deterministic · position 9; calculated value 3.

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
866748

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 · Jun 16, 2023 – Mar 26, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 26, 2025CAII · Walk-around5HUNTAWAY MIDSTREAM WEST LLC 33260209F86214/CA
Mar 4, 2024USI · Full1HUNTAWAY MIDSTREAM WEST LLC 33260209F86214/CA
Feb 9, 2024CAII · Walk-around0HUNTAWAY MIDSTREAM WEST LLC 33260209F86214/CA
Feb 9, 2024CAII · Walk-around0HUNTAWAY MIDSTREAM WEST LLC 33260204UH1566/CA
Jun 28, 2023CAII · Walk-around0HUNTAWAY MIDSTREAM WEST LLC 33260209F86214/CA
Jun 28, 2023CAII · Walk-around0HUNTAWAY MIDSTREAM WEST LLC 33260204UH1566/CA
Jun 28, 2023CAIII · Driver-only0KNIGHT TRANSPORTATION INC 428823P635373/IN
Jun 16, 2023CAI · Full0HUNTAWAY MIDSTREAM WEST LLC 33260209F86214/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HUNTAWAY MIDSTREAM WEST LLC3326020Jun 16, 2023Mar 26, 20257CA
KNIGHT TRANSPORTATION INC428823Jun 28, 2023Jun 28, 20231AZ
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.
9F86214CAHUNTAWAY MIDSTREAM WEST LLCJun 16, 2023Mar 26, 20255
4UH1566CAHUNTAWAY MIDSTREAM WEST LLCJun 28, 2023Feb 9, 20242
P635373INKNIGHT TRANSPORTATION INCJun 28, 2023Jun 28, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026