An information output method includes: obtaining travel information relating to travel of a mobile object capable of autonomously traveling and being subjected to at least one of remote operation or remote monitoring; obtaining location information relating to a remoting-required location where at least one of remote operation or remote monitoring is required; determining whether mobile objects will be located in one or more remoting-required locations at the same timing, based on the travel information and the location information; generating control information for controlling at least one mobile object, among the mobile objects, to prevent the mobile objects from being located in the one or more remoting-required locations at the same timing, when the mobile objects are determined to be located in the one or more remoting-required locations at the same timing; and outputting the control information.