Are you allowed to stop in the section of the roadway in front of this sign?

In the video you are driving on one roadway of a dual carriageway through a forest, and on both sides of it there is sign B-36 "no stopping" with plate T-25c with an arrow pointing down, which means the end of the ban. Since the ban ends only at this sign, it still applies on the section of the roadway before it - you are not allowed to stop there, even for a moment, to let a passenger out. The answer is: no.

The Regulation on road signs and signals provides that sign B-36 means a ban on stopping a vehicle, and plates T-25a, T-25b and T-25c placed under it show the beginning, continuation and end of the ban, respectively. Stopping is any standstill of a vehicle that does not result from traffic conditions or traffic rules, so this also includes a halt of a few seconds to let a passenger out. The ban applies to the side of the road on which the sign stands. You let the passenger out only beyond the sign with plate T-25c, in a place where the car will be visible and will not obstruct traffic.

Legal basis: § 28 para. 2, 3 point 1 and para. 7 point 3 of the Regulation on road signs and signals; Art. 2 point 29 of the Road Traffic Act (Prawo o ruchu drogowym)