Next, JNR modified MoHa-90 series electric train-cars for commuters to increase their speeds, for example, by changing the gear ratio, and the modified cars achieved a good record of 135 km/h, although the body shape was disadvantageous in the aspect of air resistance.
続いて国鉄はモハ90系通勤電車をギア比変更などで高速化改造、空気抵抗の面で不利な形態ながら135km/hの好記録を達成した。