The present mass transit system plays a significant role to the everyday living people in the society. Especially the middle and lower level with on personal car travel in pairs. Therefore it is necessary to rely on the mass transit services. Users can choose to use mass transit service can take many forms, such as the train, bus, etc. Currently in Taiwan, a campaign on the subject of the used car, reduce the use of private car. To reduce the problem of traffic jam. The government has a public bus services to meet the needs of the people and to achieve a comfortable journey.