To provide a portable information terminal device with which, based on current position and destination, information about public traffic route to public traffic station is easily obtained.

The current position of a terminal 101 is measured with a satellite positioning system while destination position is inputted in the terminal by the owner of it, and based on the information about current position and destination position provided like this, the nearest public traffic station is retrieved. Based on the retrieving result, the root from current position and destination position to the nearest public traffic station and the public traffic root between two stations are retrieved and displayed on a display part 106.