Accident rates and accident cost rates are calculated for different road types and junction types by using existing data for Swiss federal roads and by evaluating new accidents.

The accidents at segments without junction are selected according to  their connection to the road axis and then they are evaluated by using the length of the segment. At junctions accidents are selected according to a polygon that surrounds the junction and the accidents.

A model for the accident rate and the accident cost rate needs to be developed from the results of the accident evaluation. The model will allow estimations of the rates depending on multiple attributes.