Traffic assignment models in road evacuation

In this paper a traffic assignment model is specified in road emergencyconditions. The proposed model takes into account two classes of users: someusers in emergency conditions repeat the same choice made in ordinaryconditions, some others make a different choice. The basic concept for theproposed model is derived from day-to-day models. The path choice model,which is inside the traffic assignment model, has to take into account three typesof information which influence users’ choices: historical information related tonetwork experience in ordinary conditions, real time information related to thecurrent emergency situation, and users’ forecasting of the network evolutionbased on current experience. A non-equilibrium dynamic model is adopted inorder to simulate path flows on the network. A review of static and dynamictraffic assignment models in emergency conditions is reported.