. I rememebered a train stop suddenly, start then stop, then
start wtf. if the train needed to be stopped, stop it, but why then
start then stop again zzzzzzzzzzzzzz.
also when they stop suddenly and remained there for a good 1-2
mins on the track, the driver did not made an annoucement.
If train A is the train in front,Train B is the train you were
on,and train C was the one behind you,
1.B stopped Due to train congestion.
2.B moved because C was behind.It waited to allow the
train A move so that B could have more "spacing"to move
forward.