1. Dalhousie Transportation Collaboratory, Department of Civil and Resource Engineering, 1360 Barrington Street, Nova Scotia B3H 4R2, Canada.
2. School of Planning and Department of Civil and Resource Engineering, 1360 Barrington Street, Nova Scotia B3H 4R2, Canada.
3. School of Planning, 5410 Spring Garden Road, Dalhousie University, P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada.