1. 1) Ohkura, M., Ishikawa, M.: "Difficulties for Visually Impaired Independent Travellers in Boarding Commuter Trains : Analyses of Trainees' Performance in Orientation and Mobility Training," J. Science of Labour (in Japanese), 73, 12, pp.501-511, 1997.
2. 2) Murakami, T., Shimizu, O., Ohkura, M., Tanaka, I.: "Public Traffic Facilities and Visually Impaired Persons' Accidents (1)," Jpn. J. of Ergonomics (Special Issue) (in Japanese), 23, pp.126-127, 1987.
3. 3) Murakami, T., Aruga, T., Aoki, K., Tauchi, M., Ohkura, M.: "Investigation on Factors Contributing to Falls of Blind Travelers from Train platform," Jpn. J. of Ergonomics (Special Issue) (in Japanese), 31, pp.154-155, 1995.
4. 4) Kusukami, K., Sato, Y., Akatsuka, H.: "Psychological Analysis on Visually Handicapped Persons' Falling from Railway Platform," RTRI Rep. (in Japanese), 11, 11, pp.13-18, 1997.
5. 5) Ohkura, M., Murakami, T., Shimizu, O., Tauchi, M.: "The Relationship between some characteristics of Orientation and Mobility of Visually Impaired Travelers and Falls from Train Platforms," Jpn. J. of Ergonomics (in Japanese), 31, 1, pp.1-8, 1995.