However, because the number of passengers reached nearly 300% of train's capacity and the glass of the doors was often damaged due to overcrowding of passengers, it became impossible to deal with the transport during rush hours with three-door cars equipped with cross-seats
しかし、ラッシュ時には300%近い乗車効率に達していたことから超満員の乗客でドアガラスが破損するなど、もはや3扉クロスシート車主体でラッシュ輸送に対応することが困難な情勢になっていた。