Are you warned in this situation of a junction with the road on the right?

Description
§ 7 para. 3 pt. 2 of the Regulation of the Ministers of Infrastructure and of Internal Affairs and Administration of 31 July 2002 on road signs and signals (Journal of Laws No. 170, item 1393, as amended).
Explanation
Correct answer: No
No. Sign A-12b warns that the carriageway narrows on the right. It does not indicate a side-road junction or itself require a lane change. Follow the road layout and markings, and give way as required if you need to change lanes.