Train operation control in the occurrence of an unexpected delay at a low speed approaching mode during rush hours

In this study, we investigated the train operation control in the occurrence of an unexpected delay at a Low Speed Approaching mode (LSA mode) during rush hours.The crowdedness of passengers causes train delays, and the propagation of the delays has become a problem.In order to recover train delays, one approach called LSA mode has been introduced into a railway line.The LSA mode is a traveling mode at which a train approaches a station at lower speed than that at a Normal Speed Approaching mode (NSA mode).Train delays are separated into unexpected delays and expected delays caused by handling passengers.Unexpected delays are caused as by an urgent case and vehicle inspection, and take longer time than expected delays.For recovering unexpected delays, we consider that it is effective to change a traveling mode from an LSA mode to an NSA mode, and propose train operation control at which the LSA mode for trains is cancelled (changing to the NSA mode) at certain places between two stations.The purpose of this study is to investigate effectiveness of train operation control for recovering unexpected delays during rush hours.By computer simulation, we introduced the train operation control at the effective places, and compared differences between with or without the operation control.The result shows that carrying out immediately the operation control in the occurrence of unexpected delays is the most effective timing, and that effectiveness is reduced as the timing for introducing the operation control is delayed.