Equipment unit · VIN-decoded · NHTSA vPIC

1998 Kenworth W900

1XKWDB9X7WJ779138 · Truck-Tractor · TRUCK
Carriers run under2
19 mo
Inspections4
all-time
OOS inspections1
of 4
First seenFeb 8, 2024
AL
Last seenSep 22, 2025
AL
Inspected under 2 different carriers in 19 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
1XKWDB9X7WJ779138
Make
Kenworth
Model
W900
Model year
1998
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 10, 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
WDB9X

Deterministic · VIN positions 4–8.

Check digit
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
1998 or 2028

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

North American serial sequence
779138

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
1998

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
W900

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 · Feb 8, 2024 – Sep 22, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 22, 2025ALIII · Driver-only0HAMMER LANE TRANSPORTATION SERVICES LLC 1248129V5979HY/TN
Mar 21, 2025ALIII · Driver-only0HAMMER LANE TRANSPORTATION SERVICES LLC 1248129U4572HY/TN
Jan 15, 2025TNIII · Driver-only0HAMMER LANE TRANSPORTATION SERVICES LLC 1248129U4572HY/TN
Feb 8, 2024ALII · Walk-around4OOSBIG RIG TRUCKING LLC 2073949S2351HY/TN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HAMMER LANE TRANSPORTATION SERVICES LLC1248129Jan 15, 2025Sep 22, 20253TN
BIG RIG TRUCKING LLC2073949Feb 8, 2024Feb 8, 20241TN
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.
V5979HYTNHAMMER LANE TRANSPORTATION SERVICES LLCSep 22, 2025Sep 22, 20251
U4572HYTNHAMMER LANE TRANSPORTATION SERVICES LLCJan 15, 2025Mar 21, 20252
S2351HYTNBIG RIG TRUCKING LLCFeb 8, 2024Feb 8, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 10, 2026