What is the meaning of the following traffic sign?

- If you see the train’s lights, stop 20 meters before the crossing and don’t try to overtake.
- Correct answer: Overtaking is prohibited, from the signpost until after the level crossing.
- Stop at a distance of one meter at least before the tracks and check whether another vehicle is trying to overtake you.
- Drive faster and cross the railway tracks as quickly as possible. Complete the overtaking maneuver after the crossing.
Why this is the answer
The correct answer in the official bank: Overtaking is prohibited, from the signpost until after the level crossing.
The sign is placed before a level crossing. From the moment you pass it, overtaking is prohibited until you have crossed the whole crossing. Overtaking in the crossing area is dangerous, because you may have to stop before the railway tracks. So you do not speed up to complete an overtaking maneuver on the tracks.