Patent ID: 7873471

Claim:
A navigation system comprising: an input device connected with a navigation server, where the input device is configured to allow a user to enter a trip destination; a route calculation module executable on the navigation server to calculate a first route to the destination; a display for displaying the first route on a road network map that includes a plurality map elements, where a map element is a node or a segment, where the node is representative of a road intersection or an end of a road and the segment is representative of a portion of a road segment between two nodes, and where the first route is transmitted to the display so as to be displayed to the user; and an adaptive route calculation module executable on the navigation server to receive a user modification of the first route from the input device, where the user modification includes a first user selection to open a first node or segment and a second user selection to close a second node or segment in the road network map, where a second route from a current location to the trip destination is calculated with the adaptive route calculation module as a function of the user modification to include the opened first node or segment in the second route and to exclude the closed second node or segment from the second route; and where the second route is transmitted to a vehicle navigation system.