軌道運輸系統為未來綠色運輸系統的重要基石之一，但因其投資金額十分龐大，所以必須確實掌握軌道運輸系統的供需能量以及服務水準，才能使有限的資源發揮最大的效用。臺北捷運系統開始營運之初，由於運量不大並無容量問題，但隨著運量的增加，容量問題日漸受到重視，然而國內對於捷運系統路線容量分析的研究卻相當匱乏。因此本研究發展捷運系統路線容量分析模式，以臺北捷運板南線為例進行路線容量分析，發現臺北車站與忠孝復興站為其路線容量瓶頸所在，並透過敏感度分析提出改善建議。

Railway systems are important footstones of green transportation, but they are also very expensive. Thus, it is necessary to evaluate the capacity and level of service of a rail system so as to maximize its benefit under limited resources. When Taipei Metro commenced commercial service, it had no capacity problems because the ridership was light. As the total passenger amount grew, capacity problems
emerged. However, research on the analysis of rail capacity for urban rapid transit systems is quite deficient in Taiwan. Thus, this study developed a model for rail capacity analysis and applied the model to calculate the capacities of the Banqiao-Nangang Line. The empirical study results showed that Taipei Main Station and Zhongxiao Fuxing Station are the bottlenecks. Through sensitivity
analysis, some strategies to improve rail capacity are also suggested.