What is the meaning of the road-sign?

- Correct answer: Number of a main road.
- Number of a Motorway (Freeway).
- Distance to the nearest Junction.
- Distance to the nearest road.
Why this is the answer
The correct answer in the official bank: Number of a main road.
The sign shows a number inside a white shape on a red background, and it gives the number of a main road. The number is used to identify the road and to navigate along it. It does not show the distance to the nearest road or to the nearest junction.