Collision Sciences

Collision Sciences / Resource library

Spotlight 07 · Is the “most recent” event really recent?

What does an ignition-cycle count add to event authentication?

2 pages · Source updated 2026-10-11
Illustration of a vehicle data module sending hexadecimal data toward a crash report
Vehicle data → clearer evidence Concept illustration
In this resource

01 / In this resource

Is the “most recent” event really recent?

02 / In this resource

Case question

What does an ignition-cycle count add to event authentication?

03 / In this resource

What the evidence showed

A Toyota Corolla report contained a moderate frontal event recorded 64 ignition cycles before retrieval along with other stored records. That recency information is a prompt to test the event against date-of-loss and vehicle-use evidence.

04 / In this resource

Practical takeaway

“Most recent” means newest in module memory—not necessarily the claim event. Ignition cycles, mileage and reported use are key authentication checks.

The source evidence exhibit is provided below.

05 / In this resource

Related resources

06 / In this resource

Related cases

07 / In this resource

Evidence exhibit

Source illustration, page 2
Source illustration · PDF page 2 · Enlarge image ↗

Stored-event records from the Toyota Corolla report. The latest sequence shows 64 ignition cycles; prior records and source interpretation notes are retained.

View original PDF pages and figures

Original source layouts are provided for reference, including charts, tables, forms and publication credits.

Original source page 1
Original PDF, page 1
Original source page 2
Original PDF, page 2