July, 1970: Model 80 electric cars of 81- 93 were altered one by one in order to use them for two-car train operation (the conversion to two-car train operation was completed in January 1972). |
1970年(昭和45年)7月 - 80形電車81~93を順次2両連結編成に改造(1972年1月までに2両固定編成化完了)。 |