| 摘要 |
PROBLEM TO BE SOLVED: To perform a navigation apparatus of high precision by considering the characteristics of traffic conditions that change every moment. SOLUTION: Statistical traffic information (statistical data including travel time determined by traffic information collected in the past) is stored in a storage in the navigation apparatus. The version information of map data preserved by oneself is transmitted to a traffic information distribution center. Travel time (travel speed) determined by the current traffic information is included, and current traffic information adapted to the version of the map data is acquired from the traffic information distribution center. Since the travel time of a link whose travel time is unclear is calculated, non-provided link interpolation information is also acquired. A route is searched by using the current traffic information, non-provided link interpolation information, and statistical traffic information. The route is automatically searched when ignition is on. COPYRIGHT: (C)2007,JPO&INPIT |
