McHenry Forum - Crash Reconstruction & Simulation

Q: (Posted to a Facebook forum) Can anyone here share a rollover formula? A: One of the responses was: During WREX 2016 a presenter gave a presentation on a new rollover formula. S=sqrt 13(d). The distance is from trip to final rest. I have used it several times and get within 5mph of the minimum sp...

Q: Got into a discussion with someone and we ran into a "conundrum." It has to do with a reading of the various papers and such as it relates to stiffness coefficients. So say we have a set of crash test data and we want to find stiffness coefficients. The discussion hinges on the velocit...

4.5.5 uploaded!

Q: I am attempting to determine what research exists into how the CRASH algorithm may/may not overestimate DV at higher levels (i.e. 75mph). In my research I have found 1982 DOT HS 806 152 Accuracy & Sensitivity of CRASH by Smith and Noga which appears to show good correlation in the mid 60's D...

Read an interesting Op-ed article today in NY Time Opinion: Moral Hazard Has No Place in Addiction Treatment Which was about a concept called ' Moral Hazard " and included a mention of how it came into being which related to safety belts in cars?!! From the article "The University of Chica...

updated/refined with minor changes for clarification.

More details on 4.5.5 added including ZOOM ALL

added links to other new videos to main topic

Another post to the video: Q: The fact the driver left the scene is a crime in itself. In such a high profile case as this it's odd that person has never been accountable. Comment: We agree... not sure what the situation is with the judicial system of France since IF that person on Dr Phil show was ...

Feb 2024: Comment posted to the video: Q: yes you covered everything except the fact the uno diver did not stop after the crash and was never traced. COMMENT: On the Dr Phil fiasco (mentioned earlier in this thread) where he claimed they found the UNO driver etc etc... As mentioned in this thread pr...