Railway system, operation management device, operation management method, and operation management program

A railway system includes a plurality of trains and an operation management device (10). An operation management device (10) manages the operation of a target train using at least one of a plurality of trains as the target train. The operation management device (10) is provided with a calculation unit (24) and a communication unit (11). The calculation unit (24) calculates a target arrival time at which the target train arrives at the next station when a preceding train, which is a train that travels ahead of the target train among the plurality of trains, has delayed arrival at the next station, and calculates a target arrival time at which the target train arrives at the next station when the preceding train has arrived at the next station. The communication unit (11) transmits, to the target train, information on the arrival time calculated by the calculation unit (24). 铁路系统包括多辆列车和运行管理装置(10)。运行管理装置(10)将多辆列车中的至少一辆列车作为对象列车来管理对象列车的运行。运行管理装置(10)包括计算部(24)和通信部(11)。计算部(24)在多辆列车中行驶在对象列车之前的列车即前方列车发生了到达下一站晚点的情况下，计算对