1. College of Transportation Engineering Key Laboratory of Road and Traffic Engineering of the State Ministry of Education Tongji University Shanghai China
2. Section Transport Engineering and Logistics Delft University of Technology Mekelweg 2, 2628 CD Delft The Netherlands
3. Department of Management Science and Engineering School of Business Qingdao University 62 Keda Branch Road, Laoshan District Qingdao Shandong Province China