Patent ID: 7899617

Claim:
A navigation system for a vehicle, comprising: multi-branch point determining means for determining whether a navigation point of a multi-lane road along a first recommended route to a destination is a temporal branch lane navigation point depending on whether a temporal branch road branches from the first recommended route at the navigation point or branches from the multi-lane road at a point located on a downstream side of the navigation point with a reference distance from the navigation point, the temporal branch road inevitably merging with the first recommended route; first recommended route lane navigating means for guiding the vehicle to a first recommended route lane of the multi-lane road based on the first recommended route at a first spot located along the multi-lane road on an upstream side of the navigation point when the multi-branch point determining means determines that the navigation point is the temporal branch lane navigation point; lane determining means for determining whether a current lane, on which the vehicle drives, is the first recommended route lane at a second spot located along the multi-lane road between the first spot and the navigation point; and second recommended route lane navigating means for guiding the vehicle to a second recommended route lane of the multi-lane road based on a second recommended route to the destination when the lane determining means determines that the current lane is not the first recommended route lane, wherein the second recommended route travels along the multi-lane road and exits the multi-lane road along the temporal branch road.