What is the meaning of the following traffic sign?

1. Narrow bridge. Give right-of-way to vehicles coming from the opposite direction.
2. Correct answer: You have right-of-way on the narrow road.over oncoming traffic
3. One-way traffic ahead.
4. Driving backwards is prohibited.

WhySign 305 gives you priority over oncoming traffic on the narrow section. It does not mean one-way traffic.