As the head of a marshalling yard you are coordinating the goods traffic.
By and by, due to your efforts, you work your way up to bigger marshalling yards. A level is considered to be solved, if the trains have been arranged correctly.
But be careful, unpredictable events always affect the current happenings, such as: - Important standard orders that have to be completed immediately
Problems with the waggons such as axle or fire damages - Defects of railway tracks - Weather conditions that influence the visibility and therefore the work flow - The environment of the marshalling yard also affects the game run.