For the express vs. local, sometimes it will ASK me what train I am on. When there are delays that cause trains to be closer together, it does this. I presume t

For the express vs. local, sometimes it will ASK me what train I am on. When there are delays that cause trains to be closer together, it does this. I presume they are crowd-sourcing some data instead of trying to only use an algorithm. I do love this "Transit" app though.