| Summary: | 碩士 === 淡江大學 === 資訊管理學系碩士班 === 101 === Fukang bus is a door-to-door transportation service system in Taiwan established for the handicapped. Such type of service is also known as dial-a-ride transportation system. Though the scale of the Fukang bus becomes larger and larger, the performance of the system is not satisfactory due to the low utilization of vehicles. The purpose of this study is to improve the dispatch and routing of vehicles to enhance their utilization. This study focuses on the dynamic requests of service and hence makes the route planning a dynamic dial-a-ride problem, which also increases the difficulty in solving the problem.
This study uses 0-1 integer programming to model the dynamic dial-a-ride problem, and adopts the cluster-first-routing-second strategy to solve the problem. Such a strategy divides the solution procedure to two stages. In the first stage, the sweep algorithm is employed to allocate demand nodes to their neighboring vehicles, and thus forming a set of single vehicle routing problems. In the second stage, an optimization solver is used to solve the route planning of each vehicle. By performing the sweep algorithm repeatedly with different stating nodes, we can find different combinations of demand clusters and then obtain different routing plans. A best solution is finally found from all combinations.
|
|---|
