Abstract
The purpose of this paper is to clarify the property of road network pattern by considering relationship between neighborhood intersections. The proximity graphs like Delaunay diagram(DT) and Relative Neighborhood Graph(RNG) are used to analyze the road network pattern of major cities in Japan as network construction model. The GTP index and the Crossing Factor are used to compare road network with regular road patterns. Each link of proximity graphs using the point data of intersections in digital map is compared with road links. From the result of Tsukuba Center district, the links of RNG include most of the Grid road and some of major street cannot explain by proximity graphs. The matching ratio of road gets larger as GTP gets larger.
