The Traffic Accident Reconstruction Origin -ARnews-
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The Traffic Accident Reconstruction Origin -ARnews-
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In response to some other comments in the prior posting:
After interaction with the Mercedes, the Uno had adequate time for perception, reaction and to come to a complete stop with only moderate braking. (Aside from the Mercedes tire marks, there were no other tire marks reported by police at the scene which limits the maximum speed of the Uno)
(Also note that the glass breakage and therefore interaction of the vehicles had to occur prior to the entrance to the tunnel since glass and debris found in the tunnel had to travel to rest, after breaking, from an approx. 2 foot elevation starting at a speed of between 40 and 70 mph)
Speed, alcohol and probably some form of road rage caused a loss of control of the automobile.
Impact speed-change, the lack of restraint use by the occupants and the lack of a guardrail or other attenuating device in the tunnel contributed to the fatalities.
You can be assured that several complete animations from many different perspective views were provided to 48 Hours. The 48 Hours editors chose what to present. (If you saw the June 1998 48 Hours presentation you would have seen more views of the reconstruction/animations).
Apparently you did not see some of the animations created by others which were broadcast on CNN and other networks. One had the Uno changing speed and the Mercedes up on one wheel during their interaction and then the Uno somehow passing the Mercedes by running up on the walkway as the Mercedes crashed into the pillar. Another had the Mercedes flip (rollover) subsequent to the impact with the post.
It is obvious that these other animations were based on non-Newtonian analysis procedures.
Background information on accident investigation, reconstruction and computer simulation models can be found on our web site at:
http://www.mchenrysoftware.com
Brian G. McHenry
Brian
McHenry@interpath.com
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