In this situation, are you warned of road narrowing that may impede traffic?

In the final part of the recording, on the right side of the road, the warning sign A-12a "road narrowing - on both sides" is visible. According to § 9 para. 1 of the Regulation on road signs and signals, this sign warns of a narrowing of the roadway that may cause traffic difficulties, for example, when passing oncoming vehicles.