Among the lines of the Uji-Yodo Route via Ogura, which had continuously reduced the number of services since 1997, Line No. 31 going directly toward Bonoike from Kitakawazura without going through Nishi-Imoarai was closed down on April 1, 2004.
2004年4月1日には1997年以降徐々に減便が続いていた小倉経由路線の内、西一口を経由せずに北川頭（きたかわづら）より直接坊ノ池（ぼうのいけ）に向かう31系統が廃止。