What is the meaning of the following road marking (white broken line)?

- Never drive on the left side of the line.
- Two-way road.
- Correct answer: The road’s direction or the line of a driving lane.
- Overtaking is permitted at all times.
Why this is the answer
The correct answer in the official bank: The road’s direction or the line of a driving lane.
A white broken line marks the road's centre line, separating opposite directions of traffic, or divides lanes going the same way. You may cross it when it is safe, for example to overtake or change lanes. It does not mean overtaking is allowed at all times, because the normal overtaking rules still apply. It also does not necessarily show that the road is two-way.