Personal Damage Occurrence Investigation
Analysis Reference Tree-Trunk Method of Personal Damage Occurrence Investigation (Developed by
Geoff McDonald)
I have used this technique for ages and believe it produces very high quality investigations. I have
been trained in a few other investigation methods and have read widely on the topic, I still keep
coming back to A.R.T.T. For a number of years I used to teach a 2 day course on this method and
some excellent investigations resulted. The course also allowed people to challenge the more common
beliefs about safety.
Essentially the personal damage occurrence is represented by a tree-trunk lying on the ground, at the