ABSTRACT
This chapter deals with so-called longitudinal collision avoidance systems (CAS), where the target is a preceding vehicle in the same lane. It explores earlier work on CAS support by asking whether the design of a CAS should be indifferent to varying external conditions, or whether it should be adapted to those conditions by introducing, for example, new parameter settings. The sensor technology for this configuration, and therefore the potential for future application, is relatively well developed. The average Western automobile driver experiences a rear-end collision—the case to which the current generation of sensors has most to offer—about once every 25 to 30 years. Driving behavior was evaluated by four variables: average driving speed, the standard deviation of the driving speed, percentage of time headway to preceding vehicle was below 1.0 sec, and percentage of time subject was in left lane.
