You intend to turn left. Are you obliged to yield the right of way to the vehicle approaching from the right?

In the video, in a town, you have entered a roundabout - at your entry there were signs A-7 and C-12 - and you are driving round it; at the next entry on the right, beyond a traffic island with sign C-9, a car is waiting to enter. You do not have to give way to the vehicle approaching from the right. The answer is: no.

The Regulation on road signs and signals states that sign C-12 "roundabout" used together with sign A-7 means that a driver already within the junction has right of way over a driver entering the junction. As you are already on the roundabout, the driver on the right - waiting at the entry beyond sign A-7 - gives way to you; the right-hand rule, which at uncontrolled junctions of equal roads requires you to give way to a vehicle from the right, does not apply when right of way is set by signs. The traffic island with sign C-9 separates the entry and the exit of the roundabout and reminds you that you pass it on the right. Having right of way does not free you from being careful: the driver at the entry may pull out, assuming they have enough time, so you watch their wheels and are ready to brake. Before leaving the roundabout, you switch on the right indicator and give way to pedestrians on the crossing after the exit.

Legal basis: § 36 para. 1 and 2 and § 5 para. 5 of the Regulation on road signs and signals; Art. 25 para. 1 and Art. 4 of the Road Traffic Act (Prawo o ruchu drogowym)