SaaS is a cloud model for transportation scheduling for transportation and logistics operators including railroads. This is different from a conventional high-price on-premises model by indent development, and can provide high functionality at a low price. Since it is targeted at train operators all over the world regardless of their scale, the system enables schedule planning in a manner suitable for operations without technical knowledge by reproducing tools unique to such operations such as a diagram as a software without any highly-technical complicated expressions and operations. Instinctive operations and a user interface that shows the status at a glance have enabled this solution to easily conduct complicated specialized work in a short time.