Abstract
A significant amount of effort has been put into developing models of automobile drivers' route choice for both theoretical and practical purposes. A central concern of route choice models is to describe drivers' attitudes toward travel time variability. The aim of this research paper was to investigate in more depth the complex influence of range of travel time on risk attitude and to investigate whether a relatively simple model can account for this influence. It was found that a simple heuristic model fits the relatively complex data quite well. (Author/publisher)