Why do we need surrogates to
accidents?
• Accidents are rare events and are therefore associated
with random variation
• Not all accidents are reported and the level of reporting
is unevenly distributed
• The behavioural or situational aspects of the events are
not covered by police accident data
• Accident analysis is a desk tool, not a field tool
• We need links between accidents and behaviours
• There are lots of elementary events that we never
consider to-day!
• The big thing in Automotive research is Naturalistic
Driving. Then surrogates to accidents is fundamental