I thought I would add a couple of handy hints for the Train Controller game here that people may or may not know about.
You can begin the game from any level you have already reached from the Options menu. Just touch 'Tutorial' (initially) at the 'Starting From' menu option. It will advance through each of the levels you have reached so far.
All exasperated (red) passengers get picked up at the same time; so it can be better to leave an out of the way platform to fill up with those passengers; be careful though that the platform doesn't fill up.