We breed them here for other places
The sensible answer , the whole area is a grid system, roads running South / North these are the V (vertical ) roads
Roads running East / West, these are the H ( horizontal) roads. And obviously crossing to form grids.
The grids they form have housing estates and small community shops within them.
Can you imagine the fun if there were traffic lights at the intersections?
It bad enough, some of the larger roundabouts flow freely, so they add traffic lights just for the fun of it it seems