Affiliation: | (1) Institut de Recherche Transport, B.P. 28 94110 Arcueil, France;(2) Economics Department, Dalhouse University, Halifax, Nova Scotia, Canada;(3) Oxford Polytechnic Headington, OX3 OBP Oxford, USA;(4) University of Kent, Canterbury, New Zealand;(5) Buro Goudappel & Coffeng B.V., Postbus 161 Deventer, The Netherlands;(6) 3 Acacia Street, Cambridge, Massachusetts, USA |