1. GC C2 390, Urban Transport Systems Laboratory, École Polytechnique Fédérale de Lausanne, 1015-Lausanne, Switzerland.
2. Huawei Noah's Ark Laboratory, Hong Kong, China, and Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
3. GC C2 389, Urban Transport Systems Laboratory, École Polytechnique Fédérale de Lausanne, 1015-Lausanne, Switzerland.