Subway cars without seats have been added to Line No. 7 from Thursday. Seoul Metro announced that it removed the seats of a car on one of its Line No.7 trains on a trial basis in an attempt to alleviate congestion inside its trains during peak hours. The move comes four months after such a car was first added to Seoul Metro’s Line No. 4 in January. On Line No.7, the seatless subway car is deployed around 8 a.m....