Analysis of Capacity of Iranian Railway Network

This study examined different methods of the railway capacity for Iranian railway network. Saturation coefficients presenting by UIC 405 and UIC 406 is equal to 0.6 for mixed freight and passenger traffic. Garmsar-Bahram double-track railway and Doroud-Andimeshk single-track railway are investigated as two corridors in orderto compare different capacity methods and to analyze the saturation coefficient in Iranian network. All data are collected from train movements of mentioned corridors in 2013 year. The data analysis shows that in the crowded block sections, the capacity consumption is greater than %60 in most days of the year. According to the results of statistical analysis and different interviews of Iranian,s experts, the saturation coefficients of 0.8 and 0.75 are proposed for Iranian double-track and single-track railways.