This study aims to clarify the effects of large-scale development projects on the surroundings of the Urbanization Control Area in Saitama and Ibaraki prefectures. The main finding of the study is that large-scale development projects tend to cause disordered small individual developments, roadside retail developments along trunk streets, and changes in traffic systems that may lead to traffic disorder. To improve the large-scale development projects, it is necessary to conduct the following: a) follow-up surveys both on the project and on the surrounding areas, b) improvement of the infrastructure of the Urbanization Control Areas and c) implementation of detailed zoning plans to control individual developments in these areas.
