Does the visible sign in the situation presented, warn you of the possibility of encountering frost or black ice on the road?

Yes, the visible warning sign A-32 'road icing or black ice' warns of precisely this danger. It informs that the road surface may be slippery, which often occurs on viaducts, near rivers, or on forest sections, as shown in the video. Upon seeing this sign, you must exercise particular caution and reduce speed, being prepared for a loss of traction.