You intend to turn right at the crossroads. Must you signal this manoeuvre with a right turn signal?

Yes. In accordance with Art. 22 para. 5 of the Road Traffic Act, the driver is obliged to signal their intention to change direction of travel early and clearly. This obligation applies to every manoeuvre, even if vertical (here C-2 'Compulsory right turn') or horizontal signs force a turn. Signalling is crucial to inform other road users, including pedestrians, of your intentions.