Equipment unit · VIN-decoded · NHTSA vPIC

2024 Peterbilt 579

1XPBD49X0RD638211 · Truck-Tractor · TRUCK
Carriers run under7
26 mo
Inspections10
all-time
OOS inspections3
of 10
First seenAug 2, 2024
IL
Last seenOct 16, 2026
TN
Inspected under 7 different carriers in 26 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
1XPBD49X0RD638211
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 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
0 · valid

Deterministic · position 9; calculated value 0.

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
638211

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 2, 2024 – Oct 16, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 16, 2026TNIII · Driver-only0—STEFAN LTD 3429224P1377727/IL
Sep 3, 2026MIIII · Driver-only0—J HEAVY HAULING LLC 4085596P1300057/IL
Aug 12, 2026MDIII · Driver-only0—J HEAVY HAULING LLC 4085596P1300057/IL
Apr 21, 2026COIII · Driver-only0—AJ LINERS LLC 3741602P1300057/IL
Mar 7, 2026NCII · Walk-around0—STEPPE VOYAGER LIMITED 4371106P130057/IL
Jan 22, 2026NMII · Walk-around2OOSSTEPPE VOYAGER LIMITED 4371106P1300057/IL
Jan 7, 2026MOII · Walk-around3OOSJUSTRIDERS LLC 4298934P1300057/IL
Dec 22, 2025ORI · Full5OOSJUSTRIDERS LLC 4298934P1300057/IL
Jun 11, 2025WAIII · Driver-only3—GAMAR TRANSPORTATION GROUP LLC 3378979TEMP/IL
Aug 2, 2024ILIII · Driver-only1—VIKING TRANSPORT LLC 3597375P1227634/IL
03

Carriers this unit has run under

7 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
STEFAN LTD3429224Oct 16, 2026Oct 16, 20261IL
J HEAVY HAULING LLC4085596Aug 12, 2026Sep 3, 20262IN
AJ LINERS LLC3741602Apr 21, 2026Apr 21, 20261OH
STEPPE VOYAGER LIMITED4371106Jan 22, 2026Mar 7, 20262OH
JUSTRIDERS LLC4298934Dec 22, 2025Jan 7, 20262TN
GAMAR TRANSPORTATION GROUP LLC3378979Jun 11, 2025Jun 11, 20251MO
VIKING TRANSPORT LLC3597375Aug 2, 2024Aug 2, 20241MI
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.
P1377727IL1STEFAN LTDOct 16, 2026 → Oct 16, 20261
P1300057IL1J HEAVY HAULING LLCAug 12, 2026 → Sep 3, 20262
P1300057IL—AJ LINERS LLCApr 21, 2026 → Apr 21, 20261
P130057IL—STEPPE VOYAGER LIMITEDMar 7, 2026 → Mar 7, 20261
P1300057IL—STEPPE VOYAGER LIMITEDJan 22, 2026 → Jan 22, 20261
P1300057IL—JUSTRIDERS LLCDec 22, 2025 → Jan 7, 20262
TEMPIL—GAMAR TRANSPORTATION GROUP LLCJun 11, 2025 → Jun 11, 20251
P1227634IL—VIKING TRANSPORT LLCAug 2, 2024 → Aug 2, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026