ABSTRACT
This chapter examines the consequences of accepting this proposed curvilinearity in terms of how drivers must behave and react to create an association like that, suggest some other explanations to this phenomenon. It reviews the literature, trying to ascertain what explanations are actually supported in the available data. The supposed non-proportional association between traffic collisions and exposure has been accepted as something of a law of nature by some researchers, and thereafter used as an argument that older drivers are not worse drivers than younger ones. The collision-exposure association could also be confounded by a correlation between age/experience and exposure. As driving tend to increase with age for car drivers those with little experience would mainly be found in the low mileage categories. Exposure to risk of a traffic accident is a concept that is on a par in importance with individual differences when it comes to traffic safety.
