| 摘要 |
PROBLEM TO BE SOLVED: To provide a navigation server capable of supporting guidance of a movable body such as an automobile by a navigation device after accurately evaluating the safety level of each link in a disaster area in view of the actual situation of the disaster. SOLUTION: The navigation server 100 extracts links included in a disaster area, and evaluates cost of each of the extracted links on the basis of probe information. It seems more likely that the impact of the disaster is reflected in spatial and temporal moving pattern of an automobile (a first movable body) 2 expressed by the probe information. Thus, the safety level of each link in the disaster area can be accurately evaluated as the cost of each link in view of the actual situation of the disaster and road situation. Also, by transmitting road traffic information created on the basis of the cost of each link to a navigation device 200, an automobile (a second movable body) 2 can be guided by the navigation device 200 so as to avoid the impact of the disaster in view of the actual situation of the disaster and road situation. COPYRIGHT: (C)2009,JPO&INPIT |
