There are many traffic modes in our country, especially urban traffic system, such as subway, regular public transit, taxi, car, bicycle and so on.

• 在我国,特别是城市交通系统,存在多种交通方式,如轨道交通、常规公交、出租车、小汽车、自行车等,因此,有必要研究多方式的联合模型。