Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBDP9XXPD850502 · Truck-Tractor · TRUCK
Carriers run under2
34 mo
Inspections12
all-time
OOS inspections2
of 12
First seenSep 18, 2023
OK
Last seenJul 5, 2026
MS
Inspected under 2 different carriers in 34 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
1XPBDP9XXPD850502
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 17, 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
X · valid

Deterministic · position 9; calculated value X.

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
850502

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
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 · Sep 18, 2023 – Jul 5, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 5, 2026MSII · Walk-around0UZB FREIGHT INC 2960200P1179287/IL
May 14, 2026NMIII · Driver-only0UZB FREIGHT INC 2960200P1179287/IL
Aug 27, 2025KSII · Walk-around1USA TRANS GROUP INC 3207402P1179287/IL
Jun 9, 2025MIII · Walk-around1USA TRANS GROUP INC 3207402P1179287/IL
Apr 10, 2025MSII · Walk-around0USA TRANS GROUP INC 3207402P1179287/IL
Apr 9, 2025LAII · Walk-around1OOSUSA TRANS GROUP INC 3207402P1179287/IL
Dec 10, 2024TNIII · Driver-only0UZB FREIGHT INC 2960200P1179287/IL
Nov 26, 2024OHII · Walk-around1UZB FREIGHT INC 2960200P1179287/IL
May 15, 2024KSIII · Driver-only1UZB FREIGHT INC 2960200P1179287/IL
Mar 13, 2024SCII · Walk-around3UZB FREIGHT INC 2960200P1179287/IL
Oct 10, 2023SCI · Full3OOSUZB FREIGHT INC 2960200P1179287/IL
Sep 18, 2023OKII · Walk-around0UZB FREIGHT INC 2960200P1179287/IL
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
UZB FREIGHT INC2960200Sep 18, 2023Jul 5, 20268IL
USA TRANS GROUP INC3207402Apr 9, 2025Aug 27, 20254IL
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.
P1179287IL1UZB FREIGHT INCSep 18, 2023Jul 5, 20268
P1179287ILUSA TRANS GROUP INCApr 9, 2025Aug 27, 20254
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 17, 2026