Reply to "Speeding Defense?"

Cuvee, There was a case in Montreal in 2001 (court date apr 2004) where a young man had an accident at an intersection and killed someone at the wee hours of the night. The crown got a hold of the vehicle's pcm and managed to contradict the driver testimonial that he was driving the speed limit at the time of the accident. (He was driving a Pontiac Sunfire)
http://www.cbc.ca/canada/story...ackbox_20040414.html

David, Automobile PCMs (black boxes) are not at all like those of airplanes. They measure a variety of items to control the vehicle and not all manufacturers PCM available info is the same and few people have the knowledge to de-cript it's info. Typical mesurements are atmospheric presure, coolant temprature, trans oil temp, exhaust temp, O2 exhaust con, rate of deceleration, wheel rotational differences.
Can't speak for all manufacturers but the simple excercise of pulling this info would be (is) a bureaucratic nightmare. In my 20 years there were only 2 instances where it was requested and granted ant it was for accidents involving police cars and deaths.