1. Ph.D. Student, Dept. of Civil and Environmental Engineering, Univ. of Waterloo, Waterloo, ON, Canada N2L 3G1 (corresponding author).
2. Professor, Intelligent Transport Systems Research Center, Wuhan Univ. of Technology, P.O. Box 125, 1040 Heping Ave.,Wuhan 430063, P.R. China; formerly, Associate Professor, Dept. of Civil Engineering, Univ. of New Brunswick, Fredericton, NB, Canada E3B 5A3.
3. Professor, Faculty of Science, Applied Science and Engineering, Univ. of New Brunswick, St. John, Canada E2L 4L5.