You intend to turn left. Do you have the right of way over the motorcyclist turning left?

In the video you are driving along a street through an estate of detached houses, on a road marked with sign D-1 "priority road", and you intend to turn left into an intersecting road; a motorcyclist who also wants to turn left is coming out of this minor road on the left. You have right of way over him, because you are driving on the priority road. The answer is: yes.

The Regulation on road signs and signals provides that sign D-1 means the beginning or continuation of a priority road, and on the intersecting road there should be sign A-7 or B-20, which requires its users to give way. The Road Traffic Act requires you to obey road signs even when the rules require a different way of behaving. The rule of giving way when turning left concerns vehicles coming from the opposite direction, and the motorcyclist is coming out of a minor road from the side. So you turn with right of way, but you exercise particular caution and check whether the motorcyclist has really stopped, because a two-wheeler is easy to miss.

Legal basis: § 43 para. 1 of the Regulation on road signs and signals; Art. 5 para. 1 and Art. 25 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym)