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

In the video you are driving along a street in a town, along a building and a fence; on the right, by a lamp post, there is a yellow triangle with a snowflake symbol - sign A-32 "frost on the roadway". It warns of frost or black ice that may occur on the road. The answer is: yes.

The Regulation on road signs and signals states that sign A-32 "frost on the roadway" warns of frost or black ice that may occur on the road. The sign is placed where ice appears more often than on neighbouring sections - in shaded places, on bridges and flyovers, which cool down from both sides, and near water. Frost and black ice are more dangerous than snow because you cannot see them: the road surface looks wet or dry, and grip drops several times over. Warning signs require you to exercise particular caution - on cold days, beyond such a sign you take your foot off the accelerator, avoid sharp braking and increase your following distance, and if the car has an outside temperature sensor, you treat a reading close to zero as a warning. In summer there is usually no real risk, but the sign still applies and reminds you that this place can be treacherous in winter.

Legal basis: § 12 para. 2 and § 3 para. 1 of the Regulation on road signs and signals