What are you required to do according to the following road sign?

- A distance of about 250 meters to an approaching level crossing.
- You should always stop at a distance of one meter before the level crossing.
- Slow down and stop. Railway tracks 50 meters ahead.
- Correct answer: Slow down and prepare to stop before the level crossing, if necessary.
Why this is the answer
The correct answer in the official bank: Slow down and prepare to stop before the level crossing, if necessary.
These markers stand on both sides of the road before a level crossing, and the number of red stripes shows how close it is. A single stripe is the last marker before the crossing, so slow down and be ready to stop if a train approaches, the barrier lowers or the lights flash. Stopping is not always required, only when necessary.