The Oyamazaki business office (partly the Muko sub-branch) is in charge of the south 2 route and special south 2 route of Kyoto City bus (operations are outsourced to Hankyu Bus (Yokooji branch office)), which overlap the Nagaokakyo route of Hankyu Bus (the loop within the city; operations are outsourced to Hankyu Denen Bus Co., Ltd.).
京都市バスの南2系統・特南2系統（阪急バス（横大路支社）に運行委託）は、芝本までは、阪急バス長岡京線（市内循環　大山崎営業所（一部は向日出張所）担当　阪急田園バスに、運行委託）と重複しての運転となる。