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 bus lane in terms of saturation flow. The flow behavior of buses was generated by microscopic simulation model under experimental conditions. The result appears that, in condition of priority signals with headway 6 seconds and stopping at the 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 buses will increase significantly. Same conditions will lead to a significant decrease in bus delays, provided the flow rate of buses remaining fixed.