You have the freedom of the line. Run passenger trains up and down, or shunt a few trucks in the disused mine, its up to you. There are 3 passing places on the line (in each station). The two terminus` have 3 platforms, and both have an extra run through line. The middle station only has 1 main platform and a smaller platform the other way. The cobb has two lines all the way along it, but you will have to use these passing areas carefully, so you don`t end up having to reverse a train back to where it was. You will start with 4 trains, 1 at each terminus, and 2 at the middle station. If it gets too busy though, you can start more trains, by setting coaches up, and backing a spare train on to them.