Yes! It works…or should I say “they work” (“they” = “the commuters”). This is soooo cool: the riders actually read the board to see which track the train is on…and then they share it. Here is a post I did with the detail.
Tonight, they successfully announced these track assignments
6431 – the 5:18
6647 – the 5:20
6651 – the 5:47
6653 – the 6:09