Turnback capacity assessment and delay management at a rail transit terminal with two-tail tracks

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Abstract

Terminal capacity and performance have become a major concern for rail transit agencies in China due to the ever increasing passenger demand. This paper develops a mixed integer programming (MIP) optimization model to estimate the turnback capacity and performance of a rail transit terminal with two-tail tracks. The capacity evaluation and delay propagation are described and assessed as an N -track integrated model with minimal time span and train delay. Operations and design parameters such as tail track allocation strategies, maximum layover time, headway pattern, buffer time distribution scheme, and primary delay are also considered in this model. The effectiveness of the model is tested by a case study with computation results drawn from one terminal station in Shanghai, China. The case study results show that unfixed platform time and flexible tail track allocation strategies can improve the capacity of turnback operation, and the strategy of allowing swapping of the tail tracks has a significantly positive impact on delay absorption.

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APA

Jiang, Z., Tan, Y., Wang, F., & Bu, L. (2015). Turnback capacity assessment and delay management at a rail transit terminal with two-tail tracks. Mathematical Problems in Engineering, 2015. https://doi.org/10.1155/2015/369767

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