Historically, given its excessive financial burden, Keihan opted to run directly into the subway without obtaining the license of a Type II Railway Business Operator despite the fact that more competitive fares could have been set if Keihan had obtained a Type II Railway Business Operator's license for the Sanjo-keihan - Misasagi Station section currently operated by Kyoto Kosoku Railway Co., Ltd.
三条京阪駅～御陵駅の京都高速鉄道区間を京阪が京都市営地下鉄と同様に第二種鉄道事業免許を取得すれば運賃面では有利になったのだが、京阪の負担が過大になることから第二種鉄道事業免許を取得せず、通常の乗り入れ形式を取ることになったという経緯がある。