noun
gauge changeable train; free-gauge train
Wasei-eigo term for a train that can adjust its wheel gauge to run on different track widths, notably the Gauge Change Train (GCT) technology developed in Japan.
wasei-eigo (Japanese-coined English), from free-gauge
フリーゲージトレインは新幹線と在来線の両方を走れる。
The free-gauge train can run on both Shinkansen and conventional lines.