Equipment unit · VIN-decoded · NHTSA vPIC

1XP5DB9X04D823479

Not yet decoded
Carriers run under2
19 mo
Inspections2
all-time
OOS inspections1
of 2
First seenOct 25, 2024
TX
Last seenMay 28, 2026
SD
Inspected under 2 different carriers in 19 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

This VIN has not been decoded yet — the unit's carrier, inspection and plate history below is reconstructed from the FMCSA inspection feed regardless.

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
5DB9X

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
2004 or 2034

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

North American serial sequence
823479

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 · 13,463 decoded VINs at 100.0% prefix purity.

Model
379

Prefix basis · 13,463 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 · Oct 25, 2024 – May 28, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 28, 2026SDIII · Driver-only0ROLEY POLEY EXPRESS LLC 3696893R804406/TX
Oct 25, 2024TXII · Walk-around1OOSSOUTHERN FREIGHT LINES LLC 3114203R740577/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROLEY POLEY EXPRESS LLC3696893May 28, 2026May 28, 20261OK
SOUTHERN FREIGHT LINES LLC3114203Oct 25, 2024Oct 25, 20241TX
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.
R804406TXROLEY POLEY EXPRESS LLCMay 28, 2026May 28, 20261
R740577TXSOUTHERN FREIGHT LINES LLCOct 25, 2024Oct 25, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC