Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBD49X3PD816156 · Truck-Tractor · TRUCK
Carriers run under2
30 mo
Inspections4
all-time
OOS inspections0
of 4
First seenAug 24, 2023
MT
Last seenFeb 15, 2026
NY
Inspected under 2 different carriers in 30 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
1XPBD49X3PD816156
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
Jul 12, 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
816156

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.

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 · Aug 24, 2023 – Feb 15, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 15, 2026NYII · Walk-around1—MICHAEL DUFF INC 748927LE56560/QC
Feb 13, 2024TXII · Walk-around1—TRANS-WEST LOGISTICS INC 212131L947796/PQ
Feb 12, 2024NMIII · Driver-only0—TRANS-WEST LOGISTICS INC 212131L947796/PQ
Aug 24, 2023MTII · Walk-around0—TRANS-WEST LOGISTICS INC 212131L947796/PQ
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MICHAEL DUFF INC748927Feb 15, 2026Feb 15, 20261QC
TRANS-WEST LOGISTICS INC212131Aug 24, 2023Feb 13, 20243QC
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.
LE56560QC—MICHAEL DUFF INCFeb 15, 2026 → Feb 15, 20261
L947796PQ—TRANS-WEST LOGISTICS INCAug 24, 2023 → Feb 13, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026