Abstract: Provided with a tire temperature prediction unit 102 configured to calculate a predicted tire temperature at a specific time point based on a history of operation information of a vehicle (V1, etc.) mounted with tires (10a, etc.); a temperature tolerance calculation unit 104 configured to calculate a temperature tolerance at the specific time point; a determination unit 106 configured to determine whether or not the temperature tolerance is within a preset tolerance range; an information generation unit 202 configured to generate vehicle operation change information which changes operation of the vehicle when the determination unit 106 determines that the temperature tolerance is within the tolerance range; and a communication unit 201 configured to transmit the generated vehicle operation change information to the vehicle or to an external system 300 which manages the operation of the vehicle.