A navigation apparatus includes a route searching unit 130 for performing both a route search with car pool lanes being made usable between a current position detected by a current position detecting unit and a destination inputted by an input means, and a route search with car pool lanes being made unusable, a display means 2 for displaying either a route which uses a car pool lane or a route which does not use any car pool lane on the basis of route data showing the routes acquired through the route searches by the route searching unit, and a control unit 10 for switching between the route which uses a car pool lane and the route which does not use any car pool lane to display either of them on the display means according to an instruction inputted by the input means.