Equipment unit · VIN-decoded · NHTSA vPIC

2024 Peterbilt 579

1XPBD49XXRD638572 · Truck-Tractor · TRUCK
Carriers run under1
15 mo
Inspections5
all-time
OOS inspections1
of 5
First seenSep 10, 2024
AZ
Last seenDec 25, 2025
NM
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XPBD49XXRD638572
Make
Peterbilt
Model
579
Model year
2024
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 29, 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
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
1994 or 2024

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

North American serial sequence
638572

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
2024

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 10, 2024 – Dec 25, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 25, 2025NMII · Walk-around1RG XPRESS CORP 3050310DF37DA/FL
Oct 15, 2025ARIII · Driver-only1OOSRG XPRESS CORP 3050310DF37DA/FL
Jun 19, 2025NMIII · Driver-only0RG XPRESS CORP 3050310DF37DA/FL
Dec 15, 2024LAII · Walk-around0RG XPRESS CORP 3050310XA200Q/FL
Sep 10, 2024AZIII · Driver-only6RG XPRESS CORP 3050310XA200Q/FL
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
RG XPRESS CORP3050310Sep 10, 2024Dec 25, 20255FL
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.
DF37DAFLRG XPRESS CORPJun 19, 2025Dec 25, 20253
XA200QFLRG XPRESS CORPSep 10, 2024Dec 15, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 29, 2026