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The influence of anticipating train driving on the dispatching process in railway conflict situations. (English) Zbl 1162.90373

Summary: Dispatching support systems are currently being researched, which try to find the optimal order of trains in conflict situations and thereby improve the efficiency of railway operation. Recently, some approaches are presented to further decrease delays by anticipating train control, i.e. slowing down a train before a possible conflict in order to avoid unscheduled stops and reduce their consequences (high delay, high energy consumption, low comfort for passengers). The proposed kind of speed regulation in conflict situations is presented as a consecutive step to train dispatching, although it modifies the objective function of the previous step (delay: objective function during dispatching). This paper analyses the consequences of this sequential approach and describes the circumstances under which the optimal solution of a conflict situation can not be found this way. It proposes the concept of “time losses” whose integration into dispatching algorithms promises better solutions.

MSC:

90B20 Traffic problems in operations research
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