TRAFFIC INFORMATION COLLECTING SYSTEM FOR NAVIGATION DEVICE

摘要

An information center (5000) for collecting traffic information stores in its memory device the latest map data. Then, it is determined through a terminal device (5030) whether or not history information has been recorded in a data recording medium (800) mounted in a navigation device (1000), and when it is determined that the history information has been recorded, the map data in the data recording medium are updated to the latest map data. The data recording medium (800) is removable from the navigation device (1000). Statistical traffic information may be updated along with the updating of the map data. Further, when history information is directly uploaded to the information center, an identifier is attached to the uploaded information.