Equipment unit · VIN-decoded · NHTSA vPIC

2016 Peterbilt 579

1NPBL79X2GD257942 · Truck · INCOMPLETE VEHICLE
Carriers run under1
33 mo
Inspections11
all-time
OOS inspections4
of 11
First seenAug 3, 2023
CA
Last seenMay 27, 2026
CA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1NPBL79X2GD257942
Make
Peterbilt
Model
579
Model year
2016
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
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
1NP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
BL79X

Deterministic · VIN positions 4–8.

Check digit
2 · valid

Deterministic · position 9; calculated value 2.

Model year candidates
1986 or 2016

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

North American serial sequence
257942

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 · 125 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 125 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
2016

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

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
INCOMPLETE VEHICLE

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 · Aug 3, 2023 – May 27, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 27, 2026CAII · Walk-around5OOSWESTERN MATERIALS INC 275524075816F2/CA
Apr 29, 2026CAII · Walk-around6OOSWESTERN MATERIALS INC 275524075816F2/CA
Oct 30, 2025CAII · Walk-around7OOSWESTERN MATERIALS INC 275524075816F2/CA
Jul 17, 2025CAV · Vehicle-only4WESTERN MATERIALS INC 275524075816F2/CA
Apr 11, 2025CAII · Walk-around5WESTERN MATERIALS INC 275524075816F2/CA
Mar 6, 2025CAV · Vehicle-only6OOSWESTERN MATERIALS INC 275524075816F2/CA
Mar 8, 2024CAII · Walk-around2WESTERN MATERIALS INC 275524075816F2/CA
Feb 9, 2024CAI · Full9WESTERN MATERIALS INC 275524075816F2/CA
Jan 31, 2024CAII · Walk-around3WESTERN MATERIALS INC 275524075816F2/CA
Jan 26, 2024CAII · Walk-around1WESTERN MATERIALS INC 275524075816F2/CA
Aug 3, 2023CAV · Vehicle-only3WESTERN MATERIALS INC 275524075816F2/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
WESTERN MATERIALS INC2755240Aug 3, 2023May 27, 202611CA
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.
75816F2CAWESTERN MATERIALS INCAug 3, 2023May 27, 202611
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 17, 2026