However, this series of type 103 car was consistently required to operate at higher speeds than the practical maximum speed of ninety-five km/h, which had caused a spate of troubles including shocks from the electric braking system, each problem of which was subsequently cleared and solved one by one.
ただし、実用限界の95km/h以上の最高速度を要求された103系は、電気ブレーキ時の衝動などのトラブルが相次ぐ事になるが、それらも逐次問題点が明らかにされて解決されていく。