Abstract: To suppress the occurrence of accidents when a large passenger vehicle is stopped. This alert message display device is provided with: a stopped time prediction unit that predicts a stopped time for a large passenger vehicle that is stopped or scheduled to be stopped; a sensing unit that senses the surrounding conditions of the large passenger vehicle; and a display control unit that, on the basis of the stopped time and the surrounding conditions of the large passenger vehicle, causes a prescribed display device to display an alert message based on the surrounding conditions of the large passenger vehicle.

Abstract: This driving assistance system is provided with: a position specification unit that specifies the positions of vehicles passing along a road; a selection unit that selects a first vehicle from the vehicles; an area-setting that sets, around the first vehicle, an attention call area of a prescribed shape that moves following the movement of the first vehicle; a notification unit that notifies a second vehicle that has entered the attention call area of the presence of the first vehicle; and, an area change unit that expands the attention call area according to the state of the first vehicle.

Abstract: A detection means detects an object. A warning area setting means sets a warning area around the detected object. A notification means notifies a moving entity in the warning area of the presence of the detected object. The warning area setting means sets the warning area of a size according to at least one of detection quality information on detection accuracy of the detected object and notification communication quality information on communication quality of communication used for notifying the moving entity.

Abstract: To transmit, to a terminal, communication data corresponding to the characteristics of a network to which the terminal is connected while lightening the terminal-side processing load, a relay device comprises a reception unit configured to receive communication data addressed to a terminal from a communication device, at least one memory configured to store instructions; and at least one processor configured to execute the instructions to determine a compression parameter for the communication data on the basis of the characteristics of the network used for communication with the terminal, and a transmission unit configured to transmit the communication data compressed using the compression parameter to the terminal.

Abstract: A vehicle allocation information output apparatus relates to a vehicle capable of supplying electric power to an electric power supply destination, and outputs vehicle allocation information being information relating to the vehicle to be allocated to the electric power supply destination, the apparatus retrieving a route from a current location of the vehicle to the electric power supply destination, calculating a suppliable electric power amount of the vehicle on arrival at the electric power supply destination for the route being retrieved, and outputting information relating to a vehicle allocation pattern in which a consumption electric power amount is minimized as the vehicle allocation information, the vehicle allocation pattern being a vehicle allocation pattern in which a total amount of the suppliable electric power amount of the vehicle to be allocated is equal to or greater than a required electric power amount being required at the electric power supply destination.

Abstract: To provide a communication device, a communication system, and a communication method that can easily make contact, the communication device comprises: a receiving unit configured to receive communication information including identification information on a destination user from a first terminal; at least one processor configured to execute an instructions to select, on the basis of the identification information, one among a first network to which a first communication module associated with the user can be connected and a second network to which a second communication module associated with the user can be connected and which is different from the first network; and a unit configured to transmit, via the network selected by the at least one processor, information related to the communication information to the communication module that can be connected to the selected network, among the first communication module and the second communication module.

Abstract: One or more servers (11) communicate with one or more applications running on each of a plurality of wireless terminals (2) via a first or second cellular communication network (3, 4). Depending on a load of the first cellular communication network, the one more servers (11) select from the first and second cellular communication networks (3, 4) a cellular communication network to be used by each wireless terminal (2) to communicate with the one more servers (11). The one more servers (11) send to each wireless terminal (2) a control message to prompt each wireless terminal (2) to use the selected network. This for example makes it possible to select among a plurality of cellular communication networks in consideration of load status of the cellular communication networks.

Abstract: One or more servers (11) communicate with one or more applications running on each of a plurality of wireless terminals (2) via a first or second cellular communication network (3, 4). Depending on a load of the first cellular communication network, the one more servers (11) select from the first and second cellular communication networks (3, 4) a cellular communication network to be used by each wireless terminal (2) to communicate with the one more servers (11). The one more servers (11) send to each wireless terminal (2) a control message to prompt each wireless terminal (2) to use the selected network. This for example makes it possible to select among a plurality of cellular communication networks in consideration of load status of the cellular communication networks.

Abstract: One or more servers (11) communicate with one or more applications running on each of a plurality of wireless terminals (2) via a first or second cellular communication network (3, 4). The one more servers (11) determine and send to each wireless terminal (2) a network selection parameter used by each wireless terminal to select from the first and second cellular communication networks (3, 4) a cellular communication network used to communicate with the one more servers (11), based on one or any combination of an application priority associated with each application, a device priority associated with each wireless terminal (2), and an organization priority associated with an organization to which the plurality of wireless terminals (2) belong. This, for example, allows priority handling regarding a public safety service to be reflected in a selection among a plurality of cellular communication networks.