[1] Shenzhen Univ, Coll Civil & Transportat Engn, Dept Transportat Engn, Room A423,Civil Engn Bldg, Shenzhen 518060, Peoples R China
[2] Shenzhen Univ, Coll Civil & Transportat Engn, Dept Transportat Engn, Room A307,Civil Engn Bldg, Shenzhen 518060, Peoples R China
[3] Lanzhou Jiaotong Univ, Sch Traff & Transportat, Room A605, Lanzhou 730070, Peoples R China