Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBD49X7PD852111 · Truck-Tractor · TRUCK
Carriers run under2
32 mo
Inspections14
all-time
OOS inspections2
of 14
First seenOct 5, 2023
WA
Last seenJun 22, 2026
CA
Inspected under 2 different carriers in 32 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
1XPBD49X7PD852111
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 16, 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
7 · valid

Deterministic · position 9; calculated value 7.

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
852111

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
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 · Oct 5, 2023 – Jun 22, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 22, 2026CAI · Full0SAFECO TRANSPORT LTD 162426093550P/BC
Oct 28, 2025WAI · Full4SAFECO TRANSPORT LTD 162426093550P/BC
Aug 20, 2025CAII · Walk-around1SAFECO TRANSPORT LTD 162426093550P/BC
Aug 6, 2025CAII · Walk-around0SAFECO TRANSPORT LTD 16242609355OP/BC
Jul 22, 2025CAII · Walk-around2SAFECO TRANSPORT LTD 162426093550P/BC
Jun 30, 2025CAII · Walk-around1OOSSAFECO TRUCKLINES LTD 132448073261P/BC
Jun 19, 2025WAIII · Driver-only0SAFECO TRUCKLINES LTD 132448073261P/BC
May 4, 2025WAI · Full2SAFECO TRUCKLINES LTD 132448073261P/BC
Feb 7, 2025UTIII · Driver-only1SAFECO TRUCKLINES LTD 132448073261P/BC
Feb 26, 2024WAII · Walk-around2SAFECO TRUCKLINES LTD 132448073261P/BC
Dec 11, 2023WAII · Walk-around1OOSSAFECO TRUCKLINES LTD 132448073261P/BC
Nov 21, 2023WAIII · Driver-only0SAFECO TRUCKLINES LTD 132448073261P/BC
Nov 4, 2023WAII · Walk-around3SAFECO TRUCKLINES LTD 132448073261P/BC
Oct 5, 2023WAII · Walk-around0SAFECO TRUCKLINES LTD 132448073261P/BC
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SAFECO TRANSPORT LTD1624260Jul 22, 2025Jun 22, 20265BC
SAFECO TRUCKLINES LTD1324480Oct 5, 2023Jun 30, 20259BC
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.
93550PBC1SAFECO TRANSPORT LTDJul 22, 2025Jun 22, 20264
9355OPBCSAFECO TRANSPORT LTDAug 6, 2025Aug 6, 20251
73261PBCSAFECO TRUCKLINES LTDOct 5, 2023Jun 30, 20259
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026