In this situation, when turning right are you obliged to signal this manoeuvre with a turn signal?

In the video, you are driving across a cobbled square in a town towards an exit, where on the left there is a round white sign with a red border - B-1 "no traffic in either direction" with plates; you intend to turn right. When turning right, you are obliged to signal this manoeuvre with your indicator. The answer is: yes.

The Road Traffic Act requires the driver to signal with the indicator, in good time and clearly, the intention to change direction or lane, and to stop signalling immediately after completing the manoeuvre. A right turn is a change of direction, so the right indicator is compulsory - also on a square without painted lanes, also when nobody can be seen and the turn seems obvious. The indicator is not information "for someone in particular", but for everyone who may appear: a pedestrian coming out from round the corner of a tenement house, a cyclist or a car coming out of a gateway. Before the turn you move close to the right-hand edge of the roadway, switch on your indicator early enough not to surprise anyone behind you, and give way to pedestrians crossing the roadway you are entering.

Legal basis: Art. 22 para. 2 point 1 and para. 5 and Art. 26 para. 2 of the Road Traffic Act (Prawo o ruchu drogowym); § 16 para. 1 of the Regulation on road signs and signals