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Tiger Woods Crash Information

Posted: Fri Feb 26, 2021 10:14 am
by MSI
update April 12, 2021: see below for data on the crash
also see below for what should be the message on this crash

We will post up facts as we get them...however i refer you a reconstruction we did of the Princess Diana crash 20+ years ago.
And STILL there are crazy ass theories coming out about it.
Please see our presentation of our crash reconstruction and then some other crazy theories (a recent hack job book!) out there
I expect the same on the Tiger Woods crash...speculation and wild conspiracy theories here they come...

Re: Tiger Woods Crash Information

Posted: Thu Apr 08, 2021 11:50 am
by MSI
We have a 3D scan of the scene made a few days after the crash but were waiting for additional evidence like the EDR data and some better definition of the interaction with trees etc (damage measurements or better pictures)
May do a simulation at some point however no major issue: main cause SPEED
From the redacted police report:
tiger supplemental report.jpg
tiger supplemental report.jpg (50.88 KiB) Viewed 291 times
Tiger event 1.jpg
Tiger event 1.jpg (48.38 KiB) Viewed 291 times
Tiger Event 2.jpg
Tiger Event 2.jpg (63.52 KiB) Viewed 291 times
Tiger Event 1 and 2 combined.jpg
Tiger Event 1 and 2 combined.jpg (63.61 KiB) Viewed 291 times
the diagram in the police report it misleading...
  • if he was in the left lane he'd have approx 6 seconds of straight section of roadway prior to the curve to the right,
  • he would match up with the straight line path from berm/curb/sign impact to position of rest.
  • this diagram DOES NOT represent the path with respect to the roadway
tiger diagram.jpg
tiger diagram.jpg (31.29 KiB) Viewed 291 times
here's the actual scene
  • rough approx of his path from curb/berm to rest in yellow
  • created matching 400 foot scale in red
  • used that 400 foot scale to add arrows which line up with straight line path from left hand lane
Tiger scene with scale.jpg
Tiger scene with scale.jpg (103.35 KiB) Viewed 237 times

Re: Tiger Woods Crash Information

Posted: Mon Apr 12, 2021 10:45 am
by MSI
I believe the time is now for all crash reconstructionists to revise the ignorance surrounding the Tiger Woods Crash and use it as a teachable moment:

A simple case of speeding combined with failure to maintain control of vehicle (no doubt distraction)

The pre-crash information has come out
  • The road curved Right, after a ~6 second straight section (at his speed), and he kept going straight (see scene above)
  • He was traveling 85+ MPH in a 45 MPH zone
    • ~85+ MPH is ~125 feet per second
    • From impact on the 1st curb to last tree impact was ~400 feet
    • Which means only approx. 3.2 seconds
  • A case of speeding and probably texting or some other distraction
    • Once he hit the curb and was jostled out of position (phone probably went flying!)
    • P/R time are 1.5 to 2.5 seconds or more? particularly if you hit a curb/sign and have to re-orientate yourself and then into another curb and trees!
    • Perception/reaction took up all the time space until second curb impact?
    • Explanation of WHY no steer response until late in the event:
      • 400 hundred feet total travel distance from first curb impact to Tree Impact is
        • 400 feet/~125 feet/second = 3.2 seconds!
      • 3.2 TOTAL TIME...1.5-2.5 for perception/reaction then 0.7 to 1.7 for some limited steer and vehicle response (while going through trees, etc) and then BAM! into a BIG tree!
    A simple case of speeding combined with failure to maintain control of vehicle (no doubt due to distraction)

    And some people are surprised that he didn’t remember anything?
    • Have you ever heard of being in SHOCK after a crash?
    • He just had his leg seriously injured with a compound (or was it double compound?) fracture
    • Is there any wonder WHY his brain might have blocked out the 5 -10 or so seconds prior to his compound fracture?
    Good teaching moment to reinforce the need to limit driver distraction AND speeding
    • Driver distraction studies on texting show driver responses as bad as drunk drivers
    • Speeding studies (one we did with CASR the Australian research group) which demonstrated the serious consequences of speeding which can be as bad as drunk driving!
      Why not emphasize these things

      Why not use this and the many studies to
    Instead of all the speculation and speculative attempts to make excuses such as ‘was he asleep?’ ‘was it the roadway?’ etc
    High profile cases provide a platform
    • to help educate drivers of the importance of adhering to speed limits
    • NOT being distracted by texting etc.

Re: Tiger Woods Crash Information

Posted: Thu Apr 15, 2021 8:38 am
by MSI
NOTE on chart:
  • Calculated the approx. distance traveled from EDR Speed * 0.50 sec per increment
    • Note convert MPH to fps prior to calculations! (prior version hadn't done that!)
  • at 400 feet from Tree was approximate location of 1st Median Curb/Sign Impact
    • at 1.0-1.5 seconds after the initial curb strike
      • Steer initiated (see arrows) which is within normal range for perception/reaction (1.0-2.5 sec or so) after first curb/median strike
      • Some of the steer may be due to a second curb impact on curb on other side of the road that he struck before heading off road into the the large tree
    A simple case of speeding combined with failure to maintain control of vehicle (no doubt due to driver distraction)
Tiger Speed Distance Steer Chart.jpg
Tiger Speed Distance Steer Chart.jpg (140.69 KiB) Viewed 127 times
Did a quick chart of the Speed and Steer data from the EDR
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