Is it permitted to make a U-turn to the left where the following road sign is placed?

1. It is permitted in an intersection with traffic lights, and prohibited in an intersection without traffic lights.
2. Correct answer: Yes, unless another sign is placed to restrict this.
3. It is always permitted, even when a “no U-turn” sign is placed.
4. It is always forbidden.

WhyThe sign tells you to turn left but does not prohibit a left U-turn. It is forbidden only if a separate no-U-turn sign stands there.