1 : A method of collecting probe information generated during travel of a vehicle, comprising: (a) receiving probe information including travel time information of a reference area, from a vehicle traveling the reference area that includes at least one of an intersection area that is an area from an approach to an intersection to an exit from the intersection and a road area that connects with the intersection area and is an area from the exit of the intersection to an approach of another intersection adjacent to the intersection in an exit direction; and (b) storing the received probe information.