What is the meaning of the following traffic sign?

1. Cross the roundabout from its left.
2. The drivers inside the roundabout should yield when you enter it.
3. Correct answer: Roundabout ahead.
4. No right-of-way in the next square.

WhyA triangle with arrows in a circle warns of a roundabout ahead. You drive around it to the right, and at the entry you give way.