What is the meaning of the following traffic sign?

- Entry is permitted for driving-instruction vehicles during the course of a driving lesson..
- Correct answer: No entry for driving-instruction vehicles during the course of a driving lesson.
- No entry for new drivers.
- Entry is only permitted for two-wheelers used for driving-instruction purposes.
Why this is the answer
The correct answer in the official bank: No entry for driving-instruction vehicles during the course of a driving lesson.
A red ring on a white background is a prohibition sign, and the symbol inside shows who it applies to. The driving-instruction symbol means vehicles being used for a driving lesson at that moment may not enter. The ban does not apply to new drivers, and a driving-school car that is not giving a lesson at the time may enter.