PROBLEM TO BE SOLVED: To limit carpooling when a delay occurs in a carpooling vehicle. SOLUTION: This is a shared-ride management device for managing a shared-ride vehicle, and has a travel plan management unit that manages a travel plan including an estimated arrival time scheduled to arrive at a destination of the vehicle on which the first user rides, and a travel plan management unit in advance. Delay in calculating the delay time of the second estimated time of arrival scheduled at a predetermined second time point after the first time point with respect to the first estimated time of arrival scheduled at the predetermined first time point. A calculation unit and a travel plan management unit are provided, and when the delay time is equal to or longer than the predetermined first time, the travel plan management unit limits the boarding request from the terminal of the second user who wishes to share the vehicle with the vehicle. Manage your plans. [Selection diagram] Fig. 6
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