Patent ID: 7949468

Claim:
A route guidance system for a vehicle, comprising: a current position detector that detects a current position of the vehicle; and a controller that: searches for a route to a destination; provides route guidance about a target point in front of the target point on the searched route; determines whether there is a traffic light at the target point; determines whether there are traffic lights at each intersection between the vehicle position and the target point if there is the traffic light at the target point; determines whether (1) all of the intersections between the vehicle position and the target point have traffic lights, (2) some of the intersections between the vehicle position and the target point have traffic lights and some of the intersections between the vehicle position and the target point do not have traffic lights, and (3) all of the intersections between the vehicle position and the target point do not have traffic lights; outputs audio route guidance about the target point, if there is the traffic light at the target point, when (1) all of the intersections between the vehicle position and the target point have traffic lights or (3) all of the intersections between the vehicle position and the target point do not have traffic lights; and does not output audio route guidance about the target point, if there is the traffic light at the target point, when (2) some of the intersections between the vehicle position and the target point have traffic lights and some of the intersections between the vehicle position and the target point do not have traffic lights.