1. Visiting Scholar, Dept. of Civil and Environmental Engineering, Jackson State Univ., P.O. Box 17068, Jackson, MS 39217; presently, Ph.D. Candidate, School of Transportation and Logistics, Southwest Jiaotong Univ., 111 Second Ring Rd. North, Chengdu, Sichuan 610031, China.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Jackson State Univ., P.O. Box 17068, Jackson, MS 39217 (corresponding author).
3. Professor, School of Transportation and Logistics, Southwest Jiaotong Univ., 111 Second Ring Rd. North, Chengdu, Sichuan 610031, China.
4. Research Assistant, Institute for Multimodal Transportation, Jackson State Univ., 1230 Raymond Rd. 900, Jackson, MS 39204.