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How regular is a regular-interval timetable? From theory to application

机译：定期间隔时间表的定期性如何？从理论到应用

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Initially, choice of regular-interval timetable was mostly addressing operational concerns, aiming to increase the network throughput and to smooth the day-today tasks of the personnel. Separation between infrastructure management and train operations, induced by the European Union since the early 90s, and the future opening of the rail services to competition, pushes more and more infrastructure managers to operate their network with regular-interval timetable. Thus, the interest of measuring the degree of regularity. The paper defines the different steps needed for going from conventional operations to fully coordinated regular-interval timetable (the so-called clock-face timetable). It starts by defining the basic notions, and shows some fundamental properties of regular-based timetables. Then, based on the definitions, a methodology is developed to measure and assess the regularity of a timetable, for a line and over a full-scale network. This is because, in practice, implementation of a perfectly regular timetable is not possible and, perhaps, neither desirable. Constraints related to demand or to resources lead to cancel train paths during off-peak periods or to provide extra stops or longer dwell times (and thus slowing down travel time) during peak hours, for instance. More specifically, the paper presents a methodology for determining the interval used to evaluate and compare reference and actual timetables, per train class and by corridors. Tolerances in measuring are dealt with. The developed methodology has been used to develop assessment software, which has been used in a real life application.
机译：最初，定期间隔时间表的选择主要是解决运营方面的问题，目的是增加网络吞吐量并简化人员的日常任务。自90年代初以来，由欧洲联盟引起的基础设施管理与火车运营之间的分离，以及铁路服务的未来开放竞争，促使越来越多的基础设施管理者按固定的时间表运行其网络。因此，测量规则度的兴趣。本文定义了从常规操作到完全协调的规则间隔时间表（所谓的钟面时间表）所需的不同步骤。它从定义基本概念开始，并显示了基于常规时间表的一些基本属性。然后，基于这些定义，开发了一种方法来测量和评估线路，全线网络的时间表的规律性。这是因为，在实践中，不可能执行完全规则的时间表，也许也不希望这样做。例如，与需求或资源相关的约束导致在非高峰时段取消火车路径，或者在高峰时段提供额外的停留或更长的停留时间（从而减慢旅行时间）。更具体地说，本文提出了一种方法，该方法用于确定用于评估和比较参考时刻表和实际时刻表的时间间隔，该时间间隔是针对每个火车班级和走廊的。处理公差。所开发的方法已用于开发评估软件，该软件已在实际应用中使用。

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