A route data acquisition part (21) acquires route data indicating a movement route of a mobile body (100). A driver data acquisition part (22) acquires driver data relating to the driving ability of a driver of the mobile body (100). An accident risk calculation part (24) refers to the driver data acquired by the driver data acquisition part (22) and, for the movement route indicated by the route data acquired by the route data acquisition part (21), calculates an accident risk indicating the possibility of the mobile body (100) causing an accident.
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