Big Airbag is Watching
Discussion
[www.theregister.co.uk/content/55/31564.html]
It seems in the US that prosecutors are using data from recorders in airbags to secure convictions. Does anyone know if similar recorders are fitted in this country and would such evidence be admissible? This is a tragic story, I'm glad they did have the evidence to get the guy.
It seems in the US that prosecutors are using data from recorders in airbags to secure convictions. Does anyone know if similar recorders are fitted in this country and would such evidence be admissible? This is a tragic story, I'm glad they did have the evidence to get the guy.
What if they start using your cars management system(those of us that have one). My mechanic said to me once "You hammered it over here the thing is tuned to 113%". Meaning I had floored it on the way to the garage making the engine management system tune the engine for performance.
mmmm how would that info come across in court?
mmmm how would that info come across in court?
stuuu said:
What if they start using your cars management system(those of us that have one). My mechanic said to me once "You hammered it over here the thing is tuned to 113%". Meaning I had floored it on the way to the garage making the engine management system tune the engine for performance.
mmmm how would that info come across in court?
Shhhh you might give someone an idea.........actually we've been using the ADR's in aircraft for diagnostic purposes for years, no reason that, if the case warrented it, the same could be done for an ECU, providing non volatile memory is used of course. MoJo.
gro said:
Can't accident Investigators usually tell the speed before impact, from skid marks and level of damage to vehicles,etc. Or do they not have such a thing in the US..
No, they can take a educated guess at the very best. While I was doing my physics A-level we had a traffic office come to explain how they worked out the speed from skid marks (the ones on the road
), and (being annoying 17 year olds) we pointed out that the procedure was so full of assumptions estimates that the result would always have a large percentage of uncertainty, to which he grudgingly admitted. Basicaly you have to estimate the speed at the point of impact by asessing the damage, something that can only really be acheived through a lot of experience, and even then not overly accurately. Then you can use the skid marks to work out how fast the car was going before locking up the wheels, using average values of coefficient of friction for tyre/road contact. After this you still don't really know were the brake were first applied to work out how fast the car was going before locking the brakes.
lucozade said:I don't think so... I'm no expert, but I understand that ABS monitors the wheel for a lock up hundreds or thousands of times a second, hence any lock up would be very quickly prevented and would not leave the tyre marks on the road that you refer to.
Would'nt you still get tyre marks on the road but they would be broken up by the ABS adjusting the pressure. That would certainly explain why you see broken braking marks on the roads these days.
I suspect that what causes those intermittent tyre marks is a lockup with knackered front shocks that can't keep the wheels in contact with the road under this loading.
CarZee said:Depends on the car, is the answer - mine allows the wheels to lock up before releasing the brakes.
Would'nt you still get tyre marks on the road but they would be broken up by the ABS adjusting the pressure. That would certainly explain why you see broken braking marks on the roads these days.
I don't think so... I'm no expert, but I understand that ABS monitors the wheel for a lock up hundreds or thousands of times a second, hence any lock up would be very quickly prevented and would not leave the tyre marks on the road that you refer to.
Dan
stuuu said:
What if they start using your cars management system(those of us that have one). My mechanic said to me once "You hammered it over here the thing is tuned to 113%". Meaning I had floored it on the way to the garage making the engine management system tune the engine for performance.
mmmm how would that info come across in court?
They only store details of the last 3-5 runs. OS after an accident, (if you think this'll be a problem) you could try and start/shut down/start your car a few times to erase the records.
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