Wayside maintenance work is performed during train intervals. Though guidance for safety work is provided, there are still a number of train accidents during maintenance works. These accidents are mostly caused by human errors such as carelessness. To prevent injuries and train accidents, maintenance work has gradually been automated and systematized. The common feature of the automation is that workers can recognize the train operation diagram at the side of maintenance work. This paper describes the concept and composition of a newly developed system. The system provides wayside workers with a new mechanism to refer to the latest status of train operation.

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