Patent ID: 7512489
Filing Date: 2009-03-31
Classification: G01C,G08G

Abstract:
1. A computer-implemented route search method for a navigation device, wherein the navigation device includes a storage device which stores map data including link data of respective links constituting roads on a map, and statistical data including travel time or moving speeds of the respective links determined by statistical values of traffic information collected in the past, said statistical data being classified according to differing predetermined environmental conditions existing during collection of the traffic information, and the route search method comprises: setting step which sets a departure position, a destination, and environmental conditions for searching; and recommended route searching step which searches a recommended route from the departure position to the destination, by using the map data stored in the storage device and statistical data corresponding to the environmental conditions set in the setting step out of the statistical data stored in the storage device; wherein, in the route searching step, the statistical data corresponding to the environmental condition of respective candidate links constituting a recommended route, is used.