Abstract: When a user turns on an ignition switch at a parking lot so as to restart travel to a destination, a navigation system computes a distance from the parking lot to an intermediate position included in a guide route currently designated. When the computed distance is within a predetermined distance, whether the user has visited the intermediate position or not is inquired of the user. When the user inputs that the intermediate position has been visited, the navigation system re-designates a new guide route to the destination without need to pass by the intermediate position.

Abstract: When a user turns on an ignition switch at a parking lot so as to restart travel to a destination, a navigation system computes a distance from the parking lot to an intermediate position included in a guide route currently designated. When the computed distance is within a predetermined distance, whether the user has visited the intermediate position or not is inquired of the user. When the user inputs that the intermediate position has been visited, the navigation system re-designates a new guide route to the destination without need to pass by the intermediate position.

Abstract: A registration template in which registration headings are stated and a search template in which search headings matching the registration headings are stored in a template storage of a management center. At a registration terminal, based on the registration template transmitted from the management center, information providers are prompted to enter facility information. The entered facility information is stored in a facility information storage of the management center. In a car navigation system, based on the search template transmitted from the management center, a user is urged to enter sought information. The management center searches facility information by using this sought information, and the search result is provided to the user at the car navigation system.