Is it permitted to stop any vehicle other than a taxi where the following signpost is placed?

- It is absolutely forbidden.
- Correct answer: No, except for stopping in order to unload passengers.
- Yes, if there are no taxies parked there.
- Yes, for the purpose of loading passengers only.
Why this is the answer
The correct answer in the official bank: No, except for stopping in order to unload passengers.
The sign forbids stopping any vehicle other than a taxi at this place. The only exception is stopping in order to unload passengers. So even when there are no taxis there, no other vehicle may be stopped here, not even to load passengers.