Abstract
The concept of PDCA is an old and new one for civil engineering. Through three case studies, Hankyu Itami station rehabilitation project, Fukuoka Nanakuma line project, and Sendai Tozai line project, as the best practices of each decade, this paper examines that there are actual PDCA cycles in the fields to improve accessibility. Also, in order to realize such efforts, there are pressures and actions from disabled people’s organizations. Through their actions and movement toward railway operators to visualize “barriers”, the operators and local governments have become aware of the problems and have tried to create the most accessible railways in each decade through PDCA approaches as responding to the movement of disabled people’s organization and citizen participations of disabled people.