交通管理系统，能够查询某地公车或飞机航班，为用户提供最少旅行时间方案或最少旅行费用方案。-Traffic management system to be able to query a bus or plane flights, to provide users with a minimum of travel time program or at least the cost of travel programs.

最优路径查询，包括花费时间最少路径查询、费用最少路径查询-Optimal path query, including spending time at least path query, the least cost path query