Loving these front views a lot! At the very last switch over at hudson yards before the station, where the train had all flashing greens (approach?) signals, why was the switch signal, the double head 40:23, before the switch only have one flashing green? and not say...2 flashing greens? cause its switching over? I'm still learning the signal system of the subway so just curious about that. Usually when there is a switch the bottom head is indicating to let you know that right?
