Czech Republic of course

Looks like this was made by "🇨🇿 Roman Horník", a prominent mapper here. I guess the talk-cz mailing list is going to get boiling soon.

Lmao

The wiki does have this to say about the hazard tag

The hazard=* tag is intended to tag hazards that are explicitly declared by posted signage and/or government declaration.

Fun fact, there is some hazard=dragon also in the database, but that seems to be well supported by the existence of this signage

Oof

ಠ_ಠ