April 1, 2007: PiTaPa was introduced (also introduced to those lines that were sharing the track, such as Kintetsu Railways and Keihan Electric Railway Otsu Line).
2007年（平成19年）4月1日PiTaPa導入（乗入れしている近畿日本鉄道、京阪電気鉄道大津線も同時導入）。