New scheduling approach for freight and passenger inter-city trains considering blocking using queuing theory

Document Type : Research Paper


School of Industrial Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran


We aim to plan better scheduling for movement of shuttle trains on the single-line route of inter-city railway network to decrease the delays due to the trains blocking in successive crowded stations. A MINLP model is examined to increase capacity efficiency of the stations using the queuing theory considering blocking. We propose an optimal schedule for moving trains which minimizes the blocking probability to raise the profit gained on a two-way railway. The results show that we have achieved the best scheduling with lowest delays considering the constraints of the track number inside stations. Queuing models are applicable because the trains’ departure scheduling can be evaluated with the aid of the performance criteria obtained by the queuing model. To validate the model, an optimal schedule is proposed for a real case-study in Iran. Finally, the benefits of the model and sensitivity analysis are conducted using GAMS v24.9.1, with BARON solver.


Main Subjects

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