Patent ID: 8301378
Filing Date: 2012-10-30
Classification: G01C,G09B

Abstract:
1. A navigation system comprising: a map information acquiring unit for acquiring map information; an HOV lane decision unit for deciding whether an HOV lane is included in a road represented by the map information acquired by the map information acquiring unit or not; a current position detecting unit for detecting a current position; an HOV lane remaining distance calculating unit for calculating, when the HOV lane decision unit decides that the HOV lane is included and if the current position detected by the current position detecting unit is located in an HOV lane change enabled section indicated by lane change enabled position information contained in the map information, a distance to an endpoint of the HOV lane change enabled section; or an HOV lane remaining time calculating unit for calculating, when the HOV lane decision unit decides that the HOV lane is included and if the current position detected by the current position detecting unit is located in an HOV lane change enabled section indicated by lane change enabled position information contained in the map information, a period of time taken to pass through an endpoint of the HOV lane change enabled section; and a display control unit for causing the remaining distance calculated by the HOV lane remaining distance calculating unit or the remaining time calculated by the HOV lane remaining time calculating unit to be displayed; or a voice information unit for causing the remaining distance calculated by the HOV lane remaining distance calculating unit or the remaining time calculated by the HOV lane remaining time calculating unit to be output in voice.