In 1950 the line between Nagao and Shijonawate was electrified and on the nonelectrified sections JNR/JR Diesel Cars Series Kiha 04 began to run and for the railway trains, only freight trains running between Kizu and Hanaten two to three times a day (the line between Hanaten and Katamachi and the Joto Goods Line were not known) remained (in 1972 the use of steam locomotives was abolished).
1950年に長尾-四条畷間が電化され、非電化区間は国鉄キハ04形気動車気動車に変わり、汽車は木津-放出間1日2-3往復（放出-片町間と城東貨物線については不明）の貨物列車だけになった（1972年に蒸気機関車使用廃止）。