Intelligent Transport System (ITS) is a generic concept, which covers a wide range of systems. In this context the concept is applied on automotive systems and comprises systems generally defined as Driver Assistance Systems (Author/publisher) (DAS), Advanced Driver Assistance Systems (ADAS), In-Vehicle Information Systems (IVIS) and (roadside) telematics. The present paper focuses on Anti-Locking Brake Systems (ABS), which is used as an illustrative example of an ITsystem with some unintended effects that calls for explanations by appropriate driver behaviour models. ABS, which aims to maintain the steering capacity during (heavy) braking by preventing the wheels from locking, is considered as a Driving Assistance System (DAS). ABS has become an increasingly standard equipment of new car makes. ABS has also been around for more than 15 years and several studies have evaluated the effect of ABS on behaviour and accidents. ABS is a case of special interest for several reasons: One is the demonstration of risk compensation associated with ABS, a second is several contraintuitive and even detrimental effects on traffic safety. Hence, with use of ABS as an example, several key issues can be extracted which are of special interest when considering ITS in a more generic sense.
Abstract