Thank You for your replay. I agree that the Wikipedia page for Seoul rail networks should be together. However this seems to be causing a lot of confusion. Perhaps a clause can be inserted in the intro that Seoul metro subway is actually a metropolitan rail system made up of rapid transit, light metro, and commuter rail lines. Additional changes like you said system # km, (subway #km, LRT #km, etc)  and the tables formatted as such like a Transit Type column or a group of tables by type. What do you think?