Patent ID: 7167795
Filing Date: 2007-01-23
Classification: G01C,G01S,G08G

Abstract:
1. A navigation device comprising: a map information acquirer for acquiring map information; a current position information acquirer for acquiring current position information on a current position of a moving body; a destination information acquirer for acquiring destination information on a location of a destination to which the moving body moves; a traffic information acquirer for acquiring traffic information on a traffic condition relating to the moving body; a traveling route searcher that can search a plurality of traveling routes of the moving body on the basis of the current position information and the destination information and by using the map information; a trouble extent recognizer for recognizing an extent of trouble for the moving body to move on each of the searched traveling routes on the basis of the traffic information acquired by the traffic information acquirer; and a notifier for notifying at least one of the plurality of traveling routes searched by the traveling route searcher, wherein the traveling route searcher searches the traveling route so as to increase a number of traveling routes to be notified by the notifier as a function of increase in the extent of trouble as recognized by the trouble extent recognizer.