Patent ID: 8437953

Claim:
A navigation apparatus configured to send a departure point, a destination, and a server searching condition to a route distribution server for enabling the route distribution server to search for a server route from the departure point to the destination, to receive the server route which has been searched for by the route distribution server based on the departure point, the destination, and the server searching condition, and to perform route guidance based on the server route, comprising: a server searching condition receiver configured to receive a plurality of server searching conditions from the route distribution server; a server searching condition selector configured to select one of the server searching conditions based on an action of a user of the navigation apparatus; and a tentative route searcher configured to search for a tentative route from the departure point to the destination after the destination is set, before the navigation apparatus receives the server route and before the route guidance based on the server route is started, wherein the navigation apparatus is configured to perform route guidance under the tentative route searched for by the navigation apparatus itself until the navigation apparatus receives the server route, wherein each of the server searching conditions is associated with a tentative searching condition used to search for the tentative route, and the tentative route searcher is configured to search for the tentative route under the tentative searching condition which is associated with one of the server searching conditions which is sent to the route distribution server, whereafter the navigation apparatus is configured to perform route guidance under the server route.