One possible benefit to switching between an “attention passengers” screen and a “alewife train is now arriving” screen on the sign is that motion on the sign offers reassurance that the sign isn’t frozen with old data up. This is probably a rare enough case to not be worth the massive amounts of cumulative wasted time over many passengers, and could be solved entirely by adding the time of the message. (Alewife train is now / arriving 12:54).
Beautiful!
One possible benefit to switching between an “attention passengers” screen and a “alewife train is now arriving” screen on the sign is that motion on the sign offers reassurance that the sign isn’t frozen with old data up. This is probably a rare enough case to not be worth the massive amounts of cumulative wasted time over many passengers, and could be solved entirely by adding the time of the message. (Alewife train is now / arriving 12:54).
The sign is already transitioning from its default state (bus/train predictions) to the announcement, so I don’t think that’s an issue?
Ah, in that case the problem I was imagining would never be relevant!