管理员可以添加、修改、删除各交通路线信息。 用户查询从某一地点到另一地点的信息，提供查询转车次数最少、花费最少、所用时间最少的相关信息。-The administrator can add, modify, delete all the traffic route information. Users to query information from one site to another, and provide query interchange number of times at