1. School of Computer Science, University College Dublin, Dublin 4, Ireland
2. INSA Rouen, UNIROUEN, UNIHAVRE, LITIS Rouen, Normandie University, Saint-Étienne-du-Rouvray, France
3. Laboratoire Ingenierie CIrculation et Trafic (LICIT), University Gustave Eiffel, Champs-sur-Marne, France