1. Research Associate Professor, College of Mechanical Engineering, Zhejiang Univ. of Technology, Hangzhou, Zhejiang 310023, China.
2. Engineer and Master, JSTI Group (Zhejiang) Transportation Planning & Design Co., Ltd., Pingshui St. 60, Hangzhou, Zhejiang 310013, China.
3. Professor, College of Mechanical Engineering, Zhejiang Univ. of Technology, Hangzhou, Zhejiang 310023, China (corresponding author).