Abstract
As a basic study on establishment of decision support tools for pre-earthquake countermeasure of road network, a method of creating data of road network and attributes of road, such as street width, roadside building and node population, from digital map data by GIS was examined in this study. It was found that time required for creating data can be reduced significantly by using this method. In addition, prediction of street-blockade of Sako district in Tokushima City was carried out using GIS with the data obtained by the method proposed here and it became clear that this method was very applicable.
