An information display control device according to an aspect of the present disclosure includes: at least one memory configured to store instructions; and at least one processor configured to execute the instructions to: acquire vehicle information including positions in each section on roads through which each of a plurality of vehicles has passed and times at which each of a plurality of vehicles has traveled the positions; generate, for each section on the roads, a map indicating traffic records calculated based on the vehicle information including a position on the section in a different mode according to elapsed time from a latest time included in the vehicle information including a position on the section; and cause a display means to display the map.

A parking-stopping point management device includes a determination criterion acquisition unit configured to acquire at least one of vehicle behavior data indicative of a behavior of at least one vehicle and sensing information of a surrounding monitoring sensor mounted in the at least one vehicle in association with position information of the at least one vehicle; a parking-stopping point detection unit configured to detect, as a parking-stopping point, a street parking point which is a point where the parking-stopping vehicle is parked on a normal road; an existence state determination unit configured to determine whether the parking-stopping vehicle still exists at the street parking point detected by the parking-stopping point detection unit based on the information acquired by the determination criterion acquisition unit; and a distribution processing unit configured to distribute information on the street parking point detected by the parking-stopping point detection unit to the at least one vehicle.

A server includes a dangerous driving level calculator and a server-side communicator. The calculator analyzes patterns of driving behavior of analyzed vehicles that are included in data of images based on sent-to-server data to calculate dangerous driving levels of the analyzed vehicles, and compares the levels of the analyzed vehicles with a predetermined value to categorize each analyzed vehicle into a danger vehicle if its level is higher than the predetermined value. The server-side communicator transmits sent-to-vehicle data to vehicle-side communicators of alerted vehicles at second predetermined timing, and receives the sent-to-server data at first timing. The sent-to-vehicle data includes the level of the danger vehicle and positional information that represents a position at which an image of the danger vehicle is captured. The level of the danger vehicle can be indicated on road maps on vehicle-side displays of the alerted vehicles in accordance the position of the danger vehicle.

A server includes a dangerous driving level calculator and a server-side communicator. The calculator analyzes patterns of driving behavior of analyzed vehicles that are included in data of images based on sent-to-server data to calculate dangerous driving levels of the analyzed vehicles, and compares the levels of the analyzed vehicles with a predetermined value to categorize each analyzed vehicle into a danger vehicle if its level is higher than the predetermined value. The server-side communicator transmits sent-to-vehicle data to vehicle-side communicators of alerted vehicles at second predetermined timing, and receives the sent-to-server data at first timing. The sent-to-vehicle data includes the level of the danger vehicle and positional information that represents a position at which an image of the danger vehicle is captured. The level of the danger vehicle can be indicated on road maps on vehicle-side displays of the alerted vehicles in accordance the position of the danger vehicle.

A technique is provided with which it is possible to appropriately reduce communication data volume. A central apparatus communicates with a mobile terminal that is movable with a mobile body. The mobile terminal includes extraction-information generation means that generates extraction information by extraction from measurement information. The central apparatus includes map-information generation means that generates map information based on the extraction information transmitted from the mobile terminal to the central apparatus, and map generation control means that evaluates completeness of the map information generated by the map-information generation means and generates command information based on the completeness.

An in-vehicle/out-vehicle cooperation device includes a data receiving unit configured to receive sensor data from the plurality of sensors via an in-vehicle network, an inter-end delay time estimation unit configured to estimate a transmission delay time of sensor data between ends from each of the plurality of sensors to a predetermined device communicable by a wireless communication device, a value determination unit configured to determine a value of sensor data output from the plurality of sensors based on a state of the vehicle and states of the plurality of sensors, and a selection unit configured to select a part of the sensor data based on transmission delay time estimated by the delay time estimation unit and the value determined by the value determination unit, and transmit a copy of the selected sensor data to the predetermined device via the wireless communication device.

A communication apparatus mounted on a vehicle includes: a camera that captures a still image used for generating a map; a positioning circuit that positions a captured position of the still image; a control circuit that associates position information indicating the captured position with image data of the still image; and a communication circuit that establishes a radio communication with a roadside unit and transmits the image data by radio to the roadside unit, in which the control circuit rearranges an transmission order of the image data to be transmitted by radio to the roadside unit, based on the position information.

A communication apparatus mounted on a vehicle includes: a camera that captures a still image used for generating a map; a positioning circuit that positions a captured position of the still image; a control circuit that associates position information indicating the captured position with image data of the still image; and a communication circuit that establishes a radio communication with a roadside unit and transmits the image data by radio to the roadside unit, in which the control circuit rearranges an transmission order of the image data to be transmitted by radio to the roadside unit, based on the position information.

A communication volume control device according to an aspect of the present disclosure includes: at least one memory configured to store instructions; and at least one processor configured to execute the instructions to: acquire, when a disaster occurs, target area information indicating a target area expected to be impacted by the disaster that has occurred; and instruct a plurality of imaging devices, which are mounted to each of a plurality of moving bodies and which transmit monitoring information related to captured images to a monitoring device at a predetermined timing, to adjust a communication volume based on the target area information when transmitting the monitoring information to the monitoring device from the imaging devices.

A wireless communication includes a wireless communication unit that performs wireless communication with a vehicle and a processing unit that performs processing for communication, in which the processing unit determines a communication amount in wireless communication performed with one or a plurality of by the wireless communication unit, transmits communication amount information relating to the determined communication amount to the vehicle by the wireless communication unit, and receives data transmitted from the vehicle at a size corresponding to the communication amount by the wireless communication unit. The processing unit may receive the communication amount information relating to the communication amount in the in-vehicle network provided inside the vehicle from the vehicle, adjust the size of data to be transmitted to the vehicle according to the received communication amount information, and transmit the data with the adjusted size to the vehicle by the wireless communication unit.