Structure of a dynamic loading model for the evaluation of control strategies

The effort spent by reserachers in the last few years in traffic modelling have been focused on the modelization of dynamic behaviour of the several components making up a transportation system. In the field of traffic assignment a large amount of models and procedures have been proposed in order to perform Dynamic Network Loading (DNL) that is the reproduction of within-day variable link performances once given a corresponding O/D demand and users' choice model. These models can be used to simulate the effects of regulation strategies on users' behaviour. In this paper a continuous dynamic network model is described; it removes some of the drawbacks of other packet approach models proposed in literature and explicitly allows the en-route modification of followed path. An algorithmic developmrnt of the model and a set of example on link modelization, while trip re-routing modelization and evaluation of control strategies are also proposed.