1. Networks Development Group, AMT, 25th Floor, 500 Place d'Armes, Montreal, Quebec H2Y 2W2, Canada.
2. School of Engineering, Transportation Research Center, University of Vermont, 114 Farrell Hall, 210 Colchester Avenue, Burlington, VT 05405-0303.
3. School of Urban Planning, McGill University, Suite 400, 815 Sherbrooke Street West, Montreal, Quebec H3A 2K6, Canada.