Imagine that you're driving through Great Britain and you're already a bit annoyed about the fact that you have to drive on the left hand side of the road. (You only have your driving license for three weeks.)
Suddenly you see the next traffic sign appear:
You start wondering what is going to happen now? They didn't show you this sign during your driving lessons..
A few hundred meters further you're suddenly in the next situation!!!
The magic roundabout !
See also the next picture....
Apparently there are 3 or 4 of these monsters in England.
This one is in Swindon, between London and Cardiff. In the centre the turning direction is opposite to the normal direction for left hand driven cars. (or equal to the situation at Europe's mainland)