PACSIM: A New Dynamic Behavioural Model for Multimodal Traffic Assignment

The present paper provides a brief introduction to PACSIM, a new model for multimodal traffic assignment. This model is distinguished by the introduction of several important features: full dynamism based on an event-driven paradigm, complete modelling of the network of information provided to network users, multilevel network representation, multimodal capabilities and the use of an explicit parametrisable behavioural theory. The paper discusses the main motivations and design concepts and presents an illustrative application of PACSIM to advanced incident warning. Some perspectives are finally outlined.