There are provided a communications system between a vehicle, a home and a center, a vehicle information communicating apparatus and an indoor information processing apparatus which imposes no limitation on communicating time enables bulk communication. The communications system comprises an on-board server and DSRC on-board equipment which are installed on the vehicle 10 and includes a DSRC base station 23 residing outside the vehicle which can communicate with the DSRC on-board equipment and a PC or a home server 22 residing indoors which is connected to the DSRC base station 23, the communication system having a detection apparatus installed on the vehicle and/or an indoor detection apparatus for detecting the state of the vehicle 10 and a communication activating apparatus for activating the communication of information between the on-board server and the PC or the home server 22 using the detection result of either or both of the detection apparatus.