Equipment unit · VIN-decoded · NHTSA vPIC

1995 Peterbilt 379

1XP5D69X1SN387899 · Truck-Tractor · TRUCK
Carriers run under2
14 mo
Inspections4
all-time
OOS inspections1
of 4
First seenJan 6, 2025
WI
Last seenMar 5, 2026
KS
Inspected under 2 different carriers in 14 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
1XP5D69X1SN387899
Make
Peterbilt
Model
379
Model year
1995
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 11, 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
5D69X

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1995 or 2025

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

North American serial sequence
387899

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 · 728 decoded VINs at 100.0% prefix purity.

Model
379

Prefix basis · 728 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 · Jan 6, 2025 – Mar 5, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 5, 2026KSIII · Driver-only1—ROCK SOLID TRANSPORT LLC 2001974T94360Z/WI
Dec 9, 2025MTII · Walk-around1—ROCK SOLID TRANSPORT LLC 200197494360Z/WI
Oct 29, 2025IAII · Walk-around7OOSROCK SOLID TRANSPORT LLC 200197494360Z/WI
Jan 6, 2025WIIII · Driver-only0—DANIEL WAYNE MERTENS 296813212178Z/WI
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROCK SOLID TRANSPORT LLC2001974Oct 29, 2025Mar 5, 20263WI
DANIEL WAYNE MERTENS2968132Jan 6, 2025Jan 6, 20251WI
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.
T94360ZWI—ROCK SOLID TRANSPORT LLCMar 5, 2026 → Mar 5, 20261
94360ZWI—ROCK SOLID TRANSPORT LLCOct 29, 2025 → Dec 9, 20252
12178ZWI—DANIEL WAYNE MERTENSJan 6, 2025 → Jan 6, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 11, 2026