Analysis on impact factors of travel speed and their countermeasures for Shanghai urban rail transit network

Urban rail transits in major cities in China are now forming complex networks due to the rapid development of themselves. Travel speed of urban rail transit network, which is an important index reflecting the service quality, has attracted much attention by those operation companies. Higher travel speed can surely lead to higher inventory turnover and less usage of trains. Till now, most related research have been only focused on the energy consumption oriented travel speed control or optimization. In this paper, based on a most representative case - Shanghai urban rail transit network which has more than 10 lines in it, the impact factors of travel speed has been comprehensively analyzed, including the performance of signal system and operation organization of all the lines; moreover, their countermeasures has also been proposed in detail.