What is the meaning of the following traffic sign?

- Narrow bridge. Give right-of-way to vehicles coming from the opposite direction.
- Correct answer: You have right-of-way on the narrow road.over oncoming traffic
- One-way traffic ahead.
- Driving backwards is prohibited.
Why this is the answer
The correct answer in the official bank: You have right-of-way on the narrow road.over oncoming traffic
The square blue sign, with a white arrow pointing up and a red arrow pointing down, tells you that on the narrow section of road you have right-of-way over oncoming traffic. The white arrow stands for your direction of travel, and the red arrow for the oncoming traffic. The sign does not indicate one-way traffic and does not prohibit driving backwards.