What is the meaning of the following traffic sign?

You are approaching a side road merging from the right (turning right is prohibited). You have right-of-way over traffic coming from the side road.

Give right-of-way to traffic coming from the road that merges from the right.

Merging of a roadway having right-of-way with a side road to its right (turning to the side road is allowed).

Crossroad ahead.