ABSTRACT
Driver behavior has long been recognized as a major cause of road crashes. Treat et al. (1977) and Sabey (1980) pointed out that human factors, either alone or in conjunction with the road environment or the vehicle, accounted for roughly 90% of crashes in the United States and Great Britain at that time. Recent estimates suggest that the situation has not changed appreciably in recent years (Bowie & Walz, 1991; Haworth & Rechnitzer, 1993).
