On the other hand, it amassed a huge fleet of trains with 1,118 Model 174 locomotives, 3,067 passenger trains, 20,884 cargo trains and consequently faced an enormous difficulty for operation, maintenance, and repair.
その反面、国鉄の保有する車輌は蒸気機関車だけでも174形式1118両、客車3067両、貨車20884両におよび、運用・整備・修理に大きな困難が発生した。