Vehicular communication system, vehicular information collecting system, and vehicular communication program

摘要

According to a vehicular communication system (10) of the present invention, a probe information can be sent to a server (20) from a second vehicle (Q2) out of an arbitrary number of second vehicles (Q2) whose present position is located in a designated area whose information is included in a multicast received by the second vehicle (Q2), in other words, a designated area with high necessity from the viewpoint of leading smoothly a first vehicle (Q1) to a desired position (P2). Also, the probe information can be collected in real time from the second vehicle (Q2) which was present in the designated area in the past and is beyond the designated area at the present time in consideration of the high capability that it holds useful information in estimating the present state thereof in the designated area.