Originally Posted by
rxziebel
Use many public garages where the ENTRANCE is the same single lane as the EXIT?

I think the head-on collisions would be worse than the side scrapes.
Well, I can think of about half a dozen or so in my hometown. Older, smaller buildings do have them. Generally there are mirrors or lights to indicate a car going one direction or the other, but not always.
Even the local hospital has a garage like that. Maybe a revenue generator?