I'm just go off a limb and suggesting that I don't mind tunnel bases, but with literally a one way direction it just creates chaos and the solution is to make them have a width where 2 players side by side can go through. I have had nothing but problems with tunnel bases. Let alone they shouldn't even be allowed cause technically you are building in a street where as the only job to let you do this is a Hobo. All I ask is either make them where 2 people can pass or get rid of them entirely.