1. Professor, Dept. of Civil Engineering, Ryerson Univ., Toronto, ON, Canada M5B 2K3.
2. Senior Lecturer, Transport Engineering, School of Civil and Environmental Engineering, Univ. of Technology Sydney, Sydney, NSW 2007, Australia (corresponding author).
3. Associate Professor and Director, Center of Transportation and Traffic Safety Studies, Abu Dhabi Univ., P.O. Box 59911, Abu Dhabi, United Arab Emirates.