The navigation system includes an information server apparatus, a terminal
apparatus for conducting navigation processing while conducting
communication with the information server apparatus, and a vehicle
navigation apparatus mounted on a vehicle to conduct navigation processing
independently of the information server apparatus. During execution of the
navigation processing in the terminal apparatus, detection is effected to
determine whether the vehicle navigation apparatus is started. Upon
detecting that the vehicle navigation apparatus has been started,
information for the navigation processing conducted until then is
transferred to the vehicle navigation apparatus. The vehicle navigation
apparatus conducts navigation processing by using the transferred
information.
