When driving on a two-way road and visibility is poor:
- You should horn while overtaking to warn the overtaken vehicle.
- It is permitted to overtake, unless a “no overtaking” sign is placed.
- You should turn on the parking lights while overtaking.
- Correct answer: It is forbidden to overtake.
Why this is the answer
The correct answer in the official bank: It is forbidden to overtake.
When visibility is poor, for example in fog or heavy rain, you cannot be sure the road is clear of an approaching vehicle or an obstacle, so it is forbidden to overtake. The prohibition applies even when no sign prohibiting overtaking has been placed. Sounding the horn or turning on lights does not make up for the lack of visibility.