That roundabout is a marvel of traffic engineering. How do I know this? Answer: I used it regularly for a while.
Things like that are great for locals, who know how they work. But not so great for visitors, especially if you get in the wrong lane at the start, which is easy to do because they paint the arrows on the road surface, and that of course means that vehicles are on top of them. Doh !
We also have so much streat furniture nowadays which just adds to confusion.