When a driver inputs a destination to a vehicle navigation system, a route search unit searches a shortest guided route connecting a starting location as a present location to the destination using map data stored in a CD-ROM and stores the shortest route in a guided route storage unit. When a route preconducting/indicating key is pressed after the search of the guided route, a guided route preconducting unit automatically draws to a video RAM route information composed of a shape of a crossing, a course, names of roads and a name of the crossing sequentially from the starting location for respective crossings where a course changes on the guided route from the present location to the destination, using guided route data stored in the guided route storage unit and the map data stored in the CD-ROM. An image of the video RAM is read out by an image conversion unit, output to a display unit after having been converted into a predetermined image signal, and displayed on a screen. With this arrangement, the driver can check the guided route from the present location to the destination before departure and/or any time before arrival.