Finally time for another little picture. I travelled into central London on the tube at the weekend. Except for rush hour, it's a fairly rapid and pleasant way to cross the city. We pass a station where one line to the west splits into two lines to the east. I used to live there. There are three platforms at the station.
When travelling west to east you need to be sure that you get the right route. People on the platform don't know quickly which branch the train will take. We all know on-platform monitors are sometimes inoperative, then you need to read the little note on the front of the train to work out where it's going or hope for an intelligible station announcement.
And going east to west, it's a crazy random game. There can be two trains about to head in exactly the same direction, down the same track, but whichever one you settle in, you "know" the other one is going to depart first.
The whole line was closed for months recently. They should have rebuilt the station. I'm not presuming more space. You would still have three platforms. You would still have exactly the same lines going in and exactly the same lines going out. But issues above all sorted. Easy.
