Equipment unit · VIN-decoded · NHTSA vPIC

2025 Peterbilt 579

1XPBD49X1SD729266 · Truck-Tractor · TRUCK
Carriers run under2
13 mo
Inspections6
all-time
OOS inspections0
of 6
First seenNov 13, 2024
IL
Last seenDec 4, 2025
PA
Inspected under 2 different carriers in 13 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
1XPBD49X1SD729266
Make
Peterbilt
Model
579
Model year
2025
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 24, 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
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1995 or 2025

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

North American serial sequence
729266

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
2025

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 · Nov 13, 2024 – Dec 4, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 4, 2025PAII · Walk-around4SHELBY TRANSPORTS LLC 38685453684025/IN
Nov 10, 2025LAIII · Driver-only0SHELBY TRANSPORTS LLC 38685453684025/IN
Sep 5, 2025OHII · Walk-around3SHELBY TRANSPORTS LLC 38685453684025/IN
Aug 8, 2025ARIII · Driver-only0SHELBY TRANSPORTS LLC 38685453684025/IN
Feb 24, 2025MDII · Walk-around1NINE TRANSPORTATION GROUP INC 38584403684025/IN
Nov 13, 2024ILIII · Driver-only0NINE TRANSPORTATION GROUP INC 38584403684025/IN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SHELBY TRANSPORTS LLC3868545Aug 8, 2025Dec 4, 20254PA
NINE TRANSPORTATION GROUP INC3858440Nov 13, 2024Feb 24, 20252TN
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.
3684025INSHELBY TRANSPORTS LLCAug 8, 2025Dec 4, 20254
3684025INNINE TRANSPORTATION GROUP INCNov 13, 2024Feb 24, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026