The following link will take you to a PDF of Chapter 5 from my forthcoming book on RECONSTRUCTING ROLLOVER CRASHES. This chapter covers the trip phase.
I'm developing this book with Gray Beauchamp as a part of the one-day course we teach on reconstructing rollover crashes (http://training.sae.org/seminars/c1502/). The next offering of this course is in the Washington DC area on July 18, 2017.
As I've mentioned with Chapters 3 and 4, if you take the time to read any part of this, I would much appreciate any feedback you would be willing to give me - the good, the bad, and the ugly. My email address is firstname.lastname@example.org or feel free to leave comments on LinkedIn. Thanks!