Equipment unit · VIN-decoded · NHTSA vPIC

1992 Kenworth T600

1XKADR9X4NS574095 · Truck-Tractor · TRUCK
Carriers run under2
36 mo
Inspections10
all-time
OOS inspections3
of 10
First seenJul 17, 2023
TX
Last seenJul 10, 2026
TX
Inspected under 2 different carriers in 36 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
1XKADR9X4NS574095
Make
Kenworth
Model
T600
Model year
1992
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 20, 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
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
ADR9X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1992 or 2022

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

North American serial sequence
574095

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.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

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
1992

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T600

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

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jul 17, 2023 – Jul 10, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 10, 2026TXII · Walk-around11OOSOTZ INC 17404441M11449/TX
May 12, 2026TXI · Full3OTZ INC 17404441M11449/TX
Apr 14, 2026TXII · Walk-around0OTZ INC 17404441M11449/TX
Feb 7, 2026TXII · Walk-around5OOSOTZ INC 17404441M11449/TX
Apr 30, 2024TXII · Walk-around9OOSPEK INC 26271111M11449/TX
Mar 26, 2024TXII · Walk-around3PEK INC 26271111M11449/TX
Mar 14, 2024TXII · Walk-around9PEK INC 26271111M11449/TX
Feb 8, 2024TXIII · Driver-only5PEK INC 26271111M11449/TX
Dec 4, 2023TXII · Walk-around1PEK INC 26271111M11449/TX
Jul 17, 2023TXII · Walk-around4PEK INC 26271111M11449/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
OTZ INC1740444Feb 7, 2026Jul 10, 20264TX
PEK INC2627111Jul 17, 2023Apr 30, 20246TX
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.
1M11449TX1OTZ INCFeb 7, 2026Jul 10, 20264
1M11449TXPEK INCJul 17, 2023Apr 30, 20246
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 20, 2026