When a vehicle stops before a level crossing:

1. It is permitted to overtake it, unless there is an unbroken separation line,
2. It is permitted to overtake it, unless the roadway’s width is less than 6 meters.
3. Correct answer: It is forbidden to overtake it.
4. It is only permitted to overtake it in case of a level crossing with a barrier.

WhyYou may not overtake a vehicle that has stopped before a level crossing. It is probably letting a train pass that you cannot see behind it.