Abstract
Owing to the Tohoku-Pacific Ocean earthquake and tsunami, many roads were blocked in all over the Tohoku region, especially in the Pacific coast area, and a lot of villages were isolated. This situation posed a serious problem for the rescue operations. Therefore, a reliability assessment of the road network is more important than before.
In this study, at first, we organized the area to assess the reliability of the road network from the point of view of the disaster prevention and set up required assessment measures. Secondly, we proposed the method of the road-connecting reliability that makes it possible to calculate assessment measures. Finally, we estimated the reliability assessment of the road network of Kochi prefecture and Iwate prefecture, and we verified that this assessment could apply to the practical business.
