What danger does this triangular traffic sign with a red border warn of?

Question

DentroTest · Accepted Answer

The sign shown is P-7, “Level crossing with barriers”: it warns of the proximity of a level crossing equipped with barriers or half-barriers. By contrast, a level crossing with no barriers is warned of by P-8, “Level crossing without barriers”, whose pictogram shows a locomotive. Saying that it informs of the proximity of an enclosed estate is a mistake: the sign has nothing to do with estates or fences, but with the crossing of a railway line. And saying that it warns of a level crossing without barriers is not correct either, for the reason given about P-8.

What danger does this triangular traffic sign with a red border warn of?

Want to pass the Permit AM (English) theory test first time?