Keio Dentetsu Bus Co., Ltd. (京王電鉄バス株式会社, Keiō Dentetsu Basu Kabushiki-gaisha) is a core bus-operating company of the Keio Group which was established on February 1, 2002, inherited business all of the Keio Electric Railway (present Keio Corporation) automobile operation division and started business on August 1 of the same year. It has four subsidiaries, Keio Bus Higashi Co., Ltd. (京王バス東株式会社, Keiō Basu Higashi Kabushiki-gaisha), Keio Bus Chuo Co., Ltd. (京王バス中央株式会社, Keiō Basu Chūō Kabusiki-gaisha), Keio Bus Minami Co., Ltd. (京王バス南株式会社, Keiō Basu Minami Kabushiki-gaisha) and Keio Bus Koganei Co., Ltd. (京王バス小金井株式会社, Keiō Basu Koganei Kabushiki-gaisha) (This article treats also about these subsidiaries). The head office of these companies is located in Fuchu, Tokyo, Japan. The operating area o