ABSTRACT
The classical road tolling problem is to toll network links such that, under the principles of Wardropian User Equilibrium (UE) assignment, a System Optimizing (SO) flow pattern is obtained. Recent work has defined a Stochastic System Optimum (SSO) and has developed methodologies to examine the minimal revenue toll problem in the case of Stochastic User Equilibrium. Marginal Social Cost Price (MSCP) tolling will be examined for differing user classes, and then the possibility of reduced revenue tolling strategies to produce the same effect will be illustrated. It would be desirable to induce or approach System Optimizing' flow patterns under stochastic user equilibrium assignment with multiple user classes. The toll level is also of interest; as in the single user class cases for either deterministic or stochastic modelling environments, it will be possible in the multiple user class case that other tolls than marginal social cost price tolls could be used to create certain desired flow patterns.
