公車專用道之容量及其影響因素分析

An Analysis of Exclusive Bus-Lane Capacity and its Affecting Factors

本研究以飽和車流量的觀點來推估公車專用道容量，研究的方法為將公車在專用道上的真實行為，以微觀的方式予以電腦模擬，分析結果顯示實驗設計條件為：採行優先號誌、公車到達間距6秒，且停靠站方式為依循最前端空位停靠時，公車專用道最大流量為225輛/小時。在影響因素方面，號誌之綠燈比增加、公車站之實體車位數增加及採取循序停靠於最前端車位的方式，均可使專用道上的公車通過數量增加；而在公車數量不變下，此三者可使公車之平均延滯時間明顯降低。

This study presents the estimation for the capacity of exclusive buslane in terms of saturation flow. The flow behavior of buses was generated bymicroscopic simulation model under experimental conditions. The result appearsthat, in condition of priority signals with headway 6 seconds and stopping atthe most frontal available berth, the maximum flow will be 225 buses per hour.The result also shows that, as the G/C ratio and bus platform length increase,and as buses stop at the most frontal available berth, the flow rate of buseswill increase significantly. Same conditions will lead to a significant decreasein bus delays, provided the flow rate of buses remaining fixed.