Does this "stop" sign on the roadway warn you of approaching a priority road?

In the photo, you are driving along a slip road towards a road on which a lorry is travelling, and on the roadway before the junction a red octagon with the inscription STOP is painted - road marking P-16. It warns you that you are approaching a priority road, confirming sign B-20. The answer is: yes.

The Regulation on road signs and signals states that road markings P-15 "give-way triangle" and P-16 "STOP inscription" confirm the marking of the entry to the junction with signs A-7 and B-20 respectively. The inscription on the roadway is visible even when the sign is hidden by a lorry or branches. You stop before the priority road, in a place from which you can see the approaching vehicles, and give way to them.

Legal basis: § 89 para. 4 and § 21 para. 1 of the Regulation on road signs and signals