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tagging along this topic on stiffness coefficients... I came across an opposing expert who presented some stiffness coefficients (A & B) for semi-trucks with no reference. I have not seen any published studies for stiffness coefficients (A & B) for semi-trucks. He is an ex-MAIT officer, so ...

Rick: Crash reconstruction isn't (shouldn't) be about finding "fault," it's about explaining HOW the crash happened and, from that, a judge or jury (or maybe at an earlier stage an adjuster) would assign or "find" a percentage of fault. While that probably sounds like splitting h...

I've seen their cable system fail before, it was only a matter of time before someone got hurt. He's lucky he didn't loose an arm or a leg or worse! Link to the full story of the incident at the NJAARS, et al combined conference here.

Can this be used to estimate speed? Assuming the system works as Bob's article described: (clip) "iPhones record every step you take and when you took it," (clip) sure, it can (with an asterisk). If you know where I am at a certain time and where I am at another time, you can calculate th...

Dwight: This is starting to sound like semantics confusion in the ABS discussion. SOME airbag control modules (a more accurate name than "black box") will RECORD as little as 2.5 seconds of data and others will RECORD as much as a little over 5 seconds. Once RECORDED, there are things that...