Metro Service Delay Recovery

Abstract

This study was conducted to identify the strategies used by operators to provide a high level of service. The research distinguishes between punctuality and regularity of service and proposes that metro passengers primarily value regularity. The focus of this research is not on incident prevention, but on strategies that can be implemented after an incident to restore service swiftly and to minimize delay. The research identifies the recovery strategies used by six metros and summarizes advantages and disadvantages of these strategies. The influence of the type of delay on the choice of strategy is described. Similarly, the impact of constraints such as line length, service frequency, and passenger crowding on the effectiveness of each strategy is also discussed. It was found that it was generally sufficient to distinguish minor incidents, slow-moving delays, and major incidents. A case study shows that those metros with higher inbuilt flexibility can return more easily to normal service. This finding will have implications for metro management. The research has been carried out by the Railway Technology Strategy Centre at Imperial College London in collaboration with the Community of Metros benchmarking group. The performances and service qualities of six metros (three European, two American, and one Asian) have been analyzed and compared. The study consists of a quantitative analysis of the performance of two lines from each metro, together with a more qualitative assessment of the strategies used to optimize performance, through structured interviews with key operational and managerial staff.

Planning and clarifying a sustainable approach to solve the problem of scheduling the train running in line one of the Tehran Metro in conditions of uncertainty through particle swarm optimization

“…In addition to the mentioned cases, there are many other reasons for this issue, some of which could be caused by the delay in the train's dispatching from the origin stations or the extent of the rail route, as well as the disaster of fixed and mobile equipment in the process of running trains. A delay in the initial scheduling plan causes the dispatching of trains not to be carried out according to the expectations of the Metro operating companies and passengers, and as a result, its implementation is different from the initial plan (Schmöcker et al, 2015). The occurrence and spreading of delays in the Metro network is a problem that imposes relatively great and sometimes irremediable costs on the Metro operating companies and its benefactors.…”