The above arrangement was required because all stations, including Kujoyama Station, which had a platform, were mere train stops and automatic ticket machines weren't installed at these stations (this arrangement was implemented at nearly all stations of the Ishiyama-Sakamoto Line until one-man operation was introduced, because they were either unmanned stations or stations with staff working only in limited time zones).
プラットホームを有していた九条山駅、それ以外の駅は電停であったが、いずれの駅にも券売機などの設備が設置されていないためである（京阪石山坂本線もほとんどの駅が無人だったか、決められた時間内しか駅員がいなかったため、ワンマン化までこのシステムを導入していた）。