A Coordinated Optimization Research on Timetable and Skip-Stop Pattern for Urban Rail Lines
摘要
During peak hours, urban rail transit systems often face imbalanced spatial-temporal demands. Due to the limited transportation capacity, passengers departing from downstream stations often experience longer waiting times. Most traditional timetable and skip-stop strategies overlook passengers’ transfer behavior, which may impact the implementation of optimization strategies. This paper aims to take passengers’ transfer behavior into account and construct a coordinated optimization model of timetable and skip-stop pattern. We regulate passengers’ transfer strategies and design a genetic algorithm for solving the optimization model. In order to characterize feasible passenger travel patterns, strict FIFO rules and capacity constraints are incorporated into the model. Our result demonstrates that considering passengers’ transfer behavior, the coordinated optimization of timetable and skip-stop strategy will not only mitigate the unfairness of acquiring rail service among passengers but also reduce the average waiting time of the entire system. We validate the effectiveness of our algorithm using the dataset from East West Line of Singapore MRT as a case study.