A Simplified Model of Urban Railway System for Dynamic Traffic Assignment
نویسندگان
چکیده
Urban mass transit such as metro plays a significant role in transportation in metropolitan areas. Its most notable usage is the morning commute situation. It is known that such transit can be delayed due to congestion under excessive passenger demand. However, there are no tractable models of transit systems considering physics of its delay and congestion. It makes difficult to obtain realistic policy implications on morning commute with excessive demand. In this study, in order to account this issue, an analytical model of dynamic urban rail transit is developed considering physical interaction between the train-congestion and passenger-congestion. The model is based on fundamental diagram of rail transit system which is analytically derived by this study, and an exitflow model. The notable feature of the proposed model is its high analytical tractability so that it can be applied to obtain policy implications on morning commute problems.
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