系统应具有售票、查询、管理和维护等功能，系统管理员可以进行对车次的更改、票价的变动及调度功能，车次调度可通过对发车时刻表的修改来进行，维护功能即可对表进行修改。-System should have the ticket, query, management and maintenance functions, the system administrator can change on the trips, the fare changes and scheduling functions,