[1] Tongji Univ, Sch Transportat Engn, Shanghai, Peoples R China
[2] Univ Texas Austin, Dept Civil Architectural & Environm Engn, Austin, TX 78712 USA
[3] Iowa State Univ, Dept Civil Construct & Environm Engn, Ames, IA USA
[4] Lamar Univ, Dept Civil & Environm Engn, Beaumont, TX USA