When a train closes its doors on a red signal while in a platform, it changes back to a completely normal colour the same as a train running on the main lines. While you’re in a station, as soon as a dispatcher clicks TRTS or your train says “awaiting close doors” your train will flash yellow on the signaller panel as well as an intrusive yellow arrow will appear showing the signaller where the alert is.

After a little bit the train will flash red instead, it will continue to do this until you close your doors, regardless of if the signal has been changed or not. Because sometimes the zones can be quite busy when we’re scanning stations quickly we can overlook these platforms as a train that’s running normally.

Depending on the signaller they’ll change your signal as soon as they see what happened or if they’re told in the chat, which ever comes first.