ON-VEHICLE NAVIGATION SYSTEM

The present invention provides an on-vehicle navigation system in which a user can perform predetermined driving using a special lane such as a carpool lane appropriately and without anxiety where advancing from a normal lane in a predetermined advancing authorized section and exiting to the normal lane in a predetermined exiting authorized section are authorized. The system includes a remaining number notifying section for notifying the user of the remaining number of at least one of an exiting authorized section for exiting from a special lane to the normal lane and an advancing authorized section for advancing to the special lane from a normal lane, between a vehicle position detected by a vehicle position calculation section and an interchange point or an exit of a plural-lane road including the special lane and the normal lane which exists on a recommended route, in performing route guidance of the vehicle.