The origin of this bus route is the former Oe-cho Municipal Management Bus, which was handed over from the former Kyoto Transport Co., Ltd. Kameoka Management Office and the former National Railway Bus to Oe-cho (this is the town that used to belong to the former Kasa District of Kyoto Prefecture.)
旧京都交通(亀岡)・旧国鉄バスの路線を旧加佐郡大江町(京都府)が継承した大江町営バスに由来。