Communication & Navigation

A communication and navigation system which performs navigation, adopting map data stored in a map database site and current position data about navigation terminals, by sending the map data to the navigation terminals through a communication network such as the Internet, wherein the map data comprising data units respectively corresponding to a plurality of display elements for display on a map, and the data units are given their preferential levels. Equip a communication and navigation system, then your life will be fantastic wherever you go!