| 摘要 |
PROBLEM TO BE SOLVED: To identify the context of a vehicle in the periphery of a place where a vehicle is traveling, with respect to an information device loaded on a vehicle. SOLUTION: The passage sequence information of a vehicle is generated by accumulating the vehicle ID of a passing vehicle in a base station 3, and the base station 3 distributes front rank information based on the passage sequence information to an in-vehicle information processor 1 of a vehicle passing through the base station 3, and an in-vehicle information processor 1 of each vehicle which has obtained the front rank information obtains vehicle ID of the front vehicle by referring to the front rank information, and transmits the vehicle ID of the self-vehicle to the front vehicle. Thus, it is possible to make the front vehicle obtain the behind rank information. COPYRIGHT: (C)2011,JPO&INPIT |
