This volume comprises twenty papers originally presented at the 4th Meeting of the EURO (Association of European Operational Research Societies) held in Newcastle. Topics covered at the conference included: traffic assignment; estimation of origin-destination flows; traffic modelling; traffic management and control; transport network analysis and design; transportation planning methods; routing and scheduling; and ITS applications.Bringing together academics, consultants and civil servants with a shared interest in the application of Operational Research techniques for solving transport problems, this collection addresses key recent developments in the theory and applications of transportation science, particularly those based on OR methods such as optimisation, mathematical programming, stimulation, and artificial intelligence.