What is the meaning of the following traffic sign?

- Road for non-motor vehicles only.
- Correct answer: Road for motor vehicles only.
- Road for commercial vehicles only.
- Road for public vehicles only.
Why this is the answer
The correct answer in the official bank: Road for motor vehicles only.
The sign marks a road for motor vehicles only. The car symbol stands for motor vehicles in general, not only commercial vehicles or public vehicles. So non-motor vehicles, such as bicycles, may not use this road.