Patent ID: 6591188
Filing Date: 2003-07-08
Classification: G01C,G06Q,G08G

Abstract:
A method of facilitating operation of a navigation system located in a vehicle travelling in a geographic region comprising:storing data that indicate a primary route between an origin and a destination, wherein the primary route comprises a first series of road segments connecting the origin and the destination along which the vehicle actually traveled; storing data that indicate at least one secondary route between the origin and the destination, wherein the secondary route comprises a second series of road segments connecting the origin and the destination along which the vehicle actually traveled, and wherein at least some of the road segments in the secondary route are different than the road segments in the primary route; at a time subsequent to when the data indicating the primary route and the data indicating the secondary route have been stored, determining that the vehicle is traveling to the destination by matching data pertaining to a current trip to corresponding data in the primary route and secondary route; obtaining real time traffic data that pertain to the primary route and the secondary route; and indicating to a driver of the vehicle a fastest route to the destination, wherein the fastest route is one of the primary route and the secondary route having a least travel time to the destination taking into account the real time traffic data.