In-depth, retrospective accident investigation studies provide a means to understand how car occupants are injured in road traffic accidents. In most retrospective studies, crash severity is estimated using the CRASH3 computer program.
This paper gives a brief description of CRASH3, and sets out how it is used by retrospective accident investigation studies. The effects of variations in the data input by accident investigators on results from CRASH3 were investigated. Variations in vehicle damage profile measurements the application of a and single stiffness classto front wheel drive vehicles involved in frontal impacts were looked at specifically. Based on the findings of these investigations, recommendations the use of CRASH3 in for retrospective accident investigation are then given.