DTU07 TRANSP-OR TALK Bierlaire, Michel Frejinger, Emma Three challenges in route choice modeling 2007 Seminar Technical University of Denmark, Copenhagen, Denmark July 04, 2007 Route choice models play an important role in many aspects of transportation analysis, when the usual shortest path paradigm is too unrealistic (real-time information systems, traffic simulation, etc.). Developing operationnal route choice models involves various challenges. In this talk, we will consider 3 of them: - data collection, - the large size of the choice set, - the high correlation among the alternatives. For each of them, we will identify the difficulties, and present recent research results developed at EPFL.