Are you allowed to make a U-turn on this section of the road?

In the photo, on the left, there is sign D-7 "expressway", and the roadway has two lanes in your direction and a central reservation separating it from oncoming traffic. On an expressway you may make a U-turn only at a junction or at a place intended for it - on the section you can see there is neither. The answer is: no.

The Road Traffic Act prohibits U-turns on an expressway except at a junction or at a place intended for it; on a motorway the ban is absolute. Making a U-turn across the central reservation or through a service gap in the barriers means driving the wrong way on a fast road. If you need to change direction, you drive to the nearest interchange and use the slip roads there.

Legal basis: Art. 22 para. 6 point 3 of the Road Traffic Act (Prawo o ruchu drogowym); § 48 para. 1 of the Regulation on road signs and signals