JR Group East Japan Railway Company http://www.jreast.co.jp/e/ Hokkaido Railway Company http://www.jrhokkaido.co.jp Central Japan Railway Company http://www.jr-central.co.jp/eng.nsf West Japan Railway Company http://www.westjr.co.jp/english/global_top.html Shikoku Railway Company http://www.jr-shikoku.co.jp Kyushu Railway Company http://www.jrkyushu.co.jp Japan Freight Railway Company http://www.jrfreight.co.jp/ Railway Technical Research Institute http://www.rtri.or.jp Railway Information Systems Co., Ltd. http://www.jrs.co.jp/somu/english/