What are the permitted driving directions according to the traffic signs in the following intersection?

1. Straight and left for busses only.
2. Straight in the direction of the arrow only for non-public vehicles.
3. All vehicles approaching will continue in the direction of the arrow.
4. Correct answer: Straight, for public transport only.

WhyThe yellow arrow on the road and the sign at the intersection apply only to public transport: only it may go straight here. Others do not use this path.