What about those 'no entry' roads you often see in city centres? Are you sure you can walk along them while browsing the shops? I always avoided them and went to out-of-town shopping malls just to be sure. I can't believe road signs are just for vehicles. And don't get me started on trying to get back to the train station on the one way streets - often you can see it but the detour you need to walk is rediculous!