Abstract
This paper describes a model to predict the passing behavior of drivers forced to follow low speed vehicles on a two-lane highway. Their behavior corresponds to the level of impatience which is a function of the difference of velocity between free speed and constrained speed. The model is based on the assumption that in the level of impatience, there is a threshold which is a function of traffic regulation such as passing prohibition, legal speed, relative location of vehicles and characteristics of drivers, and that drivers decrease the level of impatience by means of passing low speed vehicles when the actual level of impatience exceeds the threshold. This model can be applied to evaluate the effect of enforcing passing prohibition.
