Hong Kong has its fair share of signal failures; check out the @mtrupdate Twitter. Also, they are trying to install a new signalling system, and during testing

Hong Kong has its fair share of signal failures; check out the @mtrupdate Twitter. Also, they are trying to install a new signalling system, and during testing two trains collided: https://www.railjournal.com/signalling/contractors-responsible-hk-collision/ https://www.railjournal.com/signalling/contractors-responsib...