1. Professor, Dept. of Mechanical Engineering, Louisiana State Univ., Baton Rouge, LA 70803; and Dept. of Mechanical Engineering, Southern Univ., Baton Rouge, LA 70813 (corresponding author).
2. Research Assistant, Dept. of Mechanical Engineering, Louisiana State Univ., Baton Rouge, LA 70803.
3. Research Associate, School of Transportation, Southeast Univ., Nanjing, Jiangsu Province 210096, China.
4. Professor, School of Transportation, Southeast Univ., Nanjing, Jiangsu Province 210096, China.