Operation status reproducing device, display device, and operation status reproducing method

An operation status reproducing device to reproduce an operation status of a train based on onboard information managed by an onboard device mounted on each train of a railway system and ground information managed by a ground device to monitor an operation status of each train of the railway system, the operation status reproducing device comprising:

• an onboard information obtainer to obtain the onboard information corresponding to a date, a start time, and an end time from the onboard device mounted on a designated train being a train specified by a train number and the date, the start time, and the end time externally designated, wherein the date, the start time, and the end time define an externally-designated time period for the train;
• a specific event detector to specify time at which a specific event occurs by analyzing the onboard information obtained by the onboard information obtainer;
• a ground information obtainer to obtain the ground information in a certain period including the time at which the specific event detected by the specific event detector occurs from the ground device, wherein the certain period is only a portion of the externally-designated time period;
• an external information obtainer to obtain external information including weather information in the certain period including the time at which the specific event detected by the specific event detector occurs;
• and
• a reproduction image generator to generate a reproduction image illustrating a past operation status of the designated train based on the onboard information, the ground information, and the external information.