Pretty much the same concept as Daffy22's Train Station V3 but with a much wider range of services! Basically, there are 4 platforms (P1, P2, P3 and P4 from back to front) and you have to click the black buttons that appear to let the trains in, making sure there isn't already a train waiting at the platform that it wants to enter. Wait for the train to depart before letting another one on to the same platform or they will crash!
