Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBD49X5PD837218 · Truck-Tractor · TRUCK
Carriers run under4
35 mo
Inspections9
all-time
OOS inspections1
of 9
First seenAug 4, 2023
TX
Last seenJul 13, 2026
WA
Inspected under 4 different carriers in 35 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
1XPBD49X5PD837218
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
5 · valid

Deterministic · position 9; calculated value 5.

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
837218

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 4, 2023 – Jul 13, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 13, 2026WAII · Walk-around0—VS INTEGRITY LLC 441661328KT1Y/MO
Apr 22, 2026CAI · Full2—ISV LLC 309050328KT1Y/MO
Mar 28, 2026UTIII · Driver-only0—ISV LLC 309050328KT1Y/MO
Jan 20, 2026TXII · Walk-around1OOSISV LLC 309050328KT1Y/MO
Nov 6, 2025KYII · Walk-around3—ISV LLC 309050313KT0T/MO
Oct 23, 2024UTI · Full4—MAX LOGISTICS LLC 3758769YAKI961/OR
May 10, 2024TXII · Walk-around2—J A CARRIERS LLC 2521439R644262/TX
Feb 15, 2024TXII · Walk-around0—J A CARRIERS LLC 2521439R644262/TX
Aug 4, 2023TXII · Walk-around0—J A CARRIERS LLC 2521439R644262/TX
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
VS INTEGRITY LLC4416613Jul 13, 2026Jul 13, 20261IL
ISV LLC3090503Nov 6, 2025Apr 22, 20264MO
MAX LOGISTICS LLC3758769Oct 23, 2024Oct 23, 20241OR
J A CARRIERS LLC2521439Aug 4, 2023May 10, 20243TX
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.
28KT1YMO1VS INTEGRITY LLCJul 13, 2026 → Jul 13, 20261
28KT1YMO—ISV LLCJan 20, 2026 → Apr 22, 20263
13KT0TMO—ISV LLCNov 6, 2025 → Nov 6, 20251
YAKI961OR—MAX LOGISTICS LLCOct 23, 2024 → Oct 23, 20241
R644262TX—J A CARRIERS LLCAug 4, 2023 → May 10, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026