In the Great Western Express, they have the screens on the platforms but there is no info. On the next update I suggest that you guys add the times of train arrivals because people who do ‘Passenger Mode’ would most likely would like to know the train arrival and departure times.
See https://forums.dovetailgames.com/threads/information-display-boards.3105 https://forums.dovetailgames.com/threads/working-displays-on-stations-and-trains.2404 for similar suggestions. Passenger Information Systems (PIS) are supposed to be added at some point but apparently it's "complex" (who knew?) so don't hold your breath.
