Safety, capacity, and timely schedules are some of the most crucial objectives in railway operations. Positive train control (PTC) is a concept whose goal is to improve the safety and efficiency of railway operations by using advanced information technologies. Information technologies such as active communications enable the use of a dynamic headway policy, which can increase the track capacity and improve dispatching efficiency in addition to improving safety. In this paper, we propose a dynamic headway system for PTC based on active communications, which we integrate with a dynamic dispatching model in order to improve track capacity and safety in railway operations. We use a simulation model of a rail network in southern California to demonstrate the effectiveness of our proposed approach. The simulation results of different scenarios show reductions in train delays of at least 55% and reductions in travel time of at least 35% when using the dynamic headway versus using a fixed headway.


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    Title :

    Positive Train Control With Dynamic Headway Based on an Active Communication System


    Contributors:


    Publication date :

    2015




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    55.84 / 55.24 / 55.84 Straßenverkehr / 55.24 Fahrzeugführung, Fahrtechnik




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