Do they need to be told?

Spaniards seem to have a different view to the British when it comes to roundabouts. The fact that this diagram is necessary proves the point.

I can't tell you how many times cars have passed mine on the inside of roundabouts and then cut across my path to leave ahead of me just like Car C in this diagram 

The other thing that they do is pull out from behind on a single carriageway road and drive on the other side past two or even three vehicles in front of you. They'll do this  even when they are approaching a bend or a hill where they can't see oncoming traffic. Nobody wants to be held up by a slow moving vehicle like a lorry or a tractor but on single carriageway roads, that is what you have to put up with.