Incidentally, even before the railway operations were ended, Kaya Railway Co., Ltd. (the company that ran the railway) entered not only the route bus business, but also - uniquely for a railway company - the business of automobile maintenance and repair and the business of construction.
なお、運営会社の加悦鉄道株式会社は鉄道廃止以前から路線バスの運行のみならず、鉄道会社の事業展開としては異色の自動車整備業、建設業を営んでいた。