Equipment unit · VIN-decoded · NHTSA vPIC

2018 Peterbilt 579

1XPBD49X8JD485176 · Truck-Tractor · TRUCK
Carriers run under2
33 mo
Inspections14
all-time
OOS inspections2
of 14
First seenSep 27, 2023
TX
Last seenJun 17, 2026
CA
Inspected under 2 different carriers in 33 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
1XPBD49X8JD485176
Make
Peterbilt
Model
579
Model year
2018
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
BD49X

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1988 or 2018

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

North American serial sequence
485176

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
2018

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 27, 2023 – Jun 17, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 17, 2026CAIII · Driver-only1GUADALUPE DE JESUS LOPEZ SALMON 21453409H03764/CA
Jun 16, 2026CAI · Full9OOSGUADALUPE DE JESUS LOPEZ SALMON 21453409H03764/CA
May 11, 2026USIII · Driver-only0GUADALUPE DE JESUS LOPEZ SALMON 21453409H03764/CA
Apr 23, 2026USIII · Driver-only1GUADALUPE DE JESUS LOPEZ SALMON 21453409H03764/CA
Dec 1, 2025CAII · Walk-around1GUADALUPE DE JESUS LOPEZ SALMON 21453409H03764/CA
Nov 14, 2025USIII · Driver-only1GUADALUPE DE JESUS LOPEZ SALMON 21453409H03764/CA
Nov 10, 2025CAI · Full2GUADALUPE DE JESUS LOPEZ SALMON 21453409H03764/CA
Jun 25, 2025CAIII · Driver-only0GUADALUPE DE JESUS LOPEZ SALMON 21453409H03764/CA
May 8, 2025CAI · Full1GUADALUPE DE JESUS LOPEZ SALMON 21453409H03764/CA
Nov 28, 2024CAI · Full0GUADALUPE DE JESUS LOPEZ SALMON 21453409H03764/CA
Mar 29, 2024LAIII · Driver-only2ROYAL FREIGHT LP 959806R6348HY/TN
Nov 9, 2023TXII · Walk-around1OOSROYAL FREIGHT LP 959806R6348HY/TN
Sep 28, 2023LAIII · Driver-only1ROYAL FREIGHT LP 959806R6348HY/TN
Sep 27, 2023TXII · Walk-around1ROYAL FREIGHT LP 959806R63484HY/TN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
GUADALUPE DE JESUS LOPEZ SALMON2145340Nov 28, 2024Jun 17, 202610BN
ROYAL FREIGHT LP959806Sep 27, 2023Mar 29, 20244TX
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.
9H03764CA1GUADALUPE DE JESUS LOPEZ SALMONNov 28, 2024Jun 17, 202610
R6348HYTNROYAL FREIGHT LPSep 28, 2023Mar 29, 20243
R63484HYTNROYAL FREIGHT LPSep 27, 2023Sep 27, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 17, 2026