1. Department of Civil, Geological, and Mining Engineering, Ecole Poly-technique de Montréal, C.P. 6079, Succ. Centre-Ville, Montréal, Québec H3C 3A7, Canada.
2. Urban Transportation Research Advancement Centre, Department of Civil Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario M5S 1A4, Canada.
3. Université de Sherbrooke, 1200 Route de l'Église, Bureau 3.45, Sainte-Foy, Québec G1V 4Z2, Canada.