A STUDY ON THE FIRST PLAN OF STREETS NETWORK AND ITS CHARACTERISTICS BY THE CITY PLANNING ACT OF 1919 : In the cases of 43 small and middle scale cities where the city planning act was enforced by the Taisyo era

Abstract

This paper clarified the first plans of streets network and their characteristics in the cases of 43 small and middle scale cities. Plans of streets network can be classified into 4 big hierarchies and 8 more detailed groups from the viewpoint of the planning scale. On the other hand, we can understand all examples of streets network patterns by considering 4 fundamental types of grid, grid + radial, grid + radial-ring, and radial-ring as the models. In the composition of streets frame there are characteristics as follows: in many cases (1) the direction line of east-west arterial roads or south-north ones is basic line of draft, (2) streets frames are based on streets network pattems, (3) streets frame folllow former roads infrastracture.