[liotier]

Remember when buildings complexes had multiple entrances ? It is increasingly rare nowadays. Using private but publicly accessible ground as thoroughfare is on the way out too. Fences go up everywhere - though 9/11 is only one part of that security paranoia... My apartment building in La Defense is the only one left on our street with a single layer of access control - two is most common and three is the standard nowadays (and when I was a child, in the early 80's, there was none and it was normal). I don't want my city to feel like a compartmented facility.

[drdeadringer]

The neighbourhood I live in has exactly one artery in and out.

This artery has multiple splinter-off points after a point, but there is a choke point where if things go bad you have no choice but to wait or fight for your chance of which escape into the wider//bigger world of roads you want.

I'm not sure why I noticed this whilst I live here yet I did.

Perhaps reading "Deep Survival: Who Lives, Who Dies, and Why" had something to do with it.