Monitoring system of railway used by East Japan Railway Company is system to monitor anomaly by sensors on rails and crossing. This monitoring system has a problem. The problem is that the system has many wrong detection. So if anomaly was happened actually, the information would be covered with wrong information. This system needs skillful instruction member because it is hard to judge whether Information is true or not. This delay of judgments may cause more big accident. So it is important to detect true information of anomaly. Therefore we suggest new monitoring system of railway which can detect true information of anomaly from much information including many wrong detection by statistical method.
