The Mysterious "Black Box"

[dpAtlanta]

A few questions:

1) Is data permanently held for a near deployment event?
2) If it is, does that mean the EDR is toast?
3) If it’s not permanently held, how long is data held for a near deployment event?
4) Can the system keep multiple near deployment event data?

1. The data is temporarily held for near-deployment events. Most will hold several events, and it over-writes prior near-deployment events as additional ones occur.
GM is the exception however. The last near-deployment event is only held for 250 key cycles, then it is erased.
2. Near-deployment events do not "toast" the module... a deployment event does however.
3. See answer #1.
4. See answer #1.

There is NO time stamp or date stamp with any of the data. The only thing that sort of dates the data is the number of key cycles since since the birth of the vehicle and the number of key cycles that existed at the time of either near-deployment, or a deployment event.

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[Tank]

1. The data is temporarily held for near-deployment events. Most will hold several events, and it over-writes prior near-deployment events as additional ones occur.
GM is the exception however. The last near-deployment event is only held for 250 key cycles, then it is erased.
2. Near-deployment events do not "toast" the module... a deployment event does however.
3. See answer #1.
4. See answer #1.

There is NO time stamp or date stamp with any of the data. The only thing that sort of dates the data is the number of key cycles since since the birth of the vehicle and the number of key cycles that existed at the time of either near-deployment, or a deployment event.

Thanks for the quick reply.

 

[Cobra Jet]

GM has had EDR’s since 1994.

Ford’s earliest install of a functional EDR is for the 2001 model year.

So I’m curious as to the purpose of the thread? There’s no harm in a vehicle containing an EDR module or that it captures and retains data.

If the driver caused an accident where there was bodily injuries, extensive collateral damages, public property damages or worse, death, is this thread to show how that data is captured and used for litigation purposes, or to go in an unethical direction?

 

[dpAtlanta]

So I’m curious as to the purpose of the thread? There’s no harm in a vehicle containing an EDR module or that it captures and retains data.

If the driver caused an accident where there was bodily injuries, extensive collateral damages, public property damages or worse, death, is this thread to show how that data is captured and used for litigation purposes, or to go in an unethical direction?

I'll try and answer your inquiries.
As to the purpose of the thread... The very first line answers that. It is a "primer" on black boxes. A Primer in literary terms means that it is a writing that presents the most basic elements of a subject. And yes, there is NO harm in having EDR data... in fact, GM found that being the first manufacturer to provide the data kept a lot of the frivolous lawsuits away.
As to how the data is captured and used... this is only a primer. It may be the methodology used by insurance SIU investigators, Accident Reconstructionists, or manufacturers gathering data.
As for the "unethical direction", you got me there. I don't know what you are referring to, but I'll be happy to try and answer once I know the question.
Hope this helps...!!!

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