DANGEROUS VEHICLE EXTRACTING DEVICE, DANGEROUS VEHICLE INFORMATION PROVIDING DEVICE AND ITS PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a dangerous vehicle extracting device which extracts information on another vehicle considered to exert an influence on a travel of one's own vehicle as information on a vehicle group that the other vehicle belongs to. SOLUTION: A process judgment device performs grouping processing for other vehicles (S1) by using information on one's own vehicle obtained form a one's own vehicle position evaluating device and a one's own-vehicle information acquiring device and information on other vehicles in the circumference of the one's own vehicle obtained from a radio communication device. Then, a vehicle group whose directions and speeds are similar to those of the one's own vehicle is extracted as a vehicle group that the one's own vehicle is considered to be belonging to according to the result of the grouping and the behavior and circumferential environment of the one's own vehicle are estimated (S2) by referring to the behavior of the vehicle group. A dangerous object vehicle group extracting processing for extracting a vehicle group including other vehicles which have estimated arrive time differences from the one's own vehicle about the same intersection within a specific time and have a competitive course with the one's own vehicle is performed (S3). Information on the extracted vehicle group is provided for a driver through display suitable to the vehicle group.