A VCIB performs processing including obtaining various requests from systems (S100), determining whether or not there is a request on the occurrence of an abnormal condition (S102), and transmitting the obtained request to an ADS and carrying out representation control (S104) when it is determined that there is a request on the occurrence of the abnormal condition (YES in S102). The ADS performs processing including carrying out, when the ADS obtains during autonomous driving the request on the occurrence of the abnormal condition, autonomous driving in accordance with the request.