2010 年 13 巻 p. 203-212
The prior traffic restriction of the road can be executed before the rainfall disaster. However, there were few persons and cars rolled in the sediment disaster when the execution of the prior traffic restriction was delayed. On the other hand, it is expected to execute the release of the traffic restriction as soon as possible if the fear of the sediment disaster becomes small. When patrol is executed, and safety is confirmed, Ishikawa Prefecture executes release of the restriction after raining finishes and three hours pass. The present study considers the method of executing the prior traffic restriction of the road and releasing it using the road disaster prevention check data and the time history of the rainfall intensity.
