http://www.cnn.com/2017/12/19/us/amtrak-derailment-washington/index.html [cnn.com] PTC, the technology that automatically slows a train if it senses that it's going too fast or might get into an accident, was installed on the track but was not yet operational, said Geoff Patrick, Sound Transit spokesman.
設置はしてあるが「まだ」動かしてなかった。と言っております。 (スコア:1)
>減速を促す信号システムとか無いんだろうか。
PTC / Posotive Train Control, 日本だと ATC 相当が設置されていたが「まだ」動作状態にはしていなかった。ということらしい
http://www.cnn.com/2017/12/19/us/amtrak-derailment-washington/index.html [cnn.com]
PTC, the technology that automatically slows a train if it senses that it's going too fast or might get into an accident, was installed on the track but was not yet operational, said Geoff Patrick, Sound Transit spokesman.