A roadside information processing system (100; 100a) comprising: a plurality of roadside devices installed on a roadside of a road and capable of communicating with a vehicle travelling on the road; and a plurality of sensors installed on the roadside to perform sensing on the road and a periphery thereof, wherein at least one of the roadside devices includes an edge-server processing unit to obtain first information from an in-vehicle device included in the vehicle and from some of the plurality of the sensors, the first information indicating information about a periphery of the vehicle and about the road and a periphery thereof, and to generate second information by using the first information, the second information indicating a position of the vehicle, a movement direction of the vehicle, and traffic jam conditions on the road, characterized in that the edge-server processing unit includes an edge processing unit to connect to some of the plurality of the roadside devices or some of the plurality of the sensors, a connection control unit to determine a connection destination for the edge processing unit, a virtual area unit to generate a virtual area for holding sensor information indicating information sensed and generated by the some of the sensors, and a connection proxy unit to obtain the sensor information from the virtual area when the connection control unit determines that a connection destination for the edge processing unit is one of the some of the sensors, and to transmit the sensor information to the edge processing unit, and in that each of the some of the sensors does not save therein the sensor information. a plurality of roadside devices installed on a roadside of a road and capable of communicating with a vehicle travelling on the road; and a plurality of sensors installed on the roadside to perform sensing on the road and a periphery thereof, wherein at least one of the roadside devices includes an edge-server processing unit to obtain first information from an in-vehicle device included in the vehicle and from some of the plurality of the sensors, the first information indicating information about a periphery of the vehicle and about the road and a periphery thereof, and to generate second information by using the first information, the second information indicating a position of the vehicle, a movement direction of the vehicle, and traffic jam conditions on the road, characterized in that the edge-server processing unit includes an edge processing unit to connect to some of the plurality of the roadside devices or some of the plurality of the sensors, a connection control unit to determine a connection destination for the edge processing unit, a virtual area unit to generate a virtual area for holding sensor information indicating information sensed and generated by the some of the sensors, and a connection proxy unit to obtain the sensor information from the virtual area when the connection control unit determines that a connection destination for the edge processing unit is one of the some of the sensors, and to transmit the sensor information to the edge processing unit, and in that each of the some of the sensors does not save therein the sensor information. an edge processing unit to connect to some of the plurality of the roadside devices or some of the plurality of the sensors, a connection control unit to determine a connection destination for the edge processing unit, a virtual area unit to generate a virtual area for holding sensor information indicating information sensed and generated by the some of the sensors, and a connection proxy unit to obtain the sensor information from the virtual area when the connection control unit determines that a connection destination for the edge processing unit is one of the some of the sensors, and to transmit the sensor information to the edge processing unit, and in that each of the some of the sensors does not save therein the sensor information.