Is it prohibited in this situation, to stop the vehicle on the right hard shoulder of this road?

In the photo you are driving along a wet road through a forest behind a blue car; a lorry is approaching from the opposite direction, there is a traffic cone on the roadway, and the right-hand edge of the roadway is marked by solid edge line P-7b, beyond which there is a narrow shoulder. Stopping a vehicle on the right shoulder of this road is prohibited. The answer is: yes.

The Road Traffic Act prohibits stopping a vehicle on the roadway and on the shoulder next to a solid line marking the edge of the roadway, and the Regulation on road signs and signals states that marking P-7b "solid edge line" marks the edge of the roadway and also means that the driver of a motor vehicle is not allowed to drive onto the shoulder. A solid edge line is a signal that the shoulder is too narrow or too soft to stop on safely - the car would stick out onto the roadway, and on a wet surface other vehicles would not manage to brake in time. On such a section you stop only when traffic conditions or traffic rules force you to; if you want to park, you wait until you reach a place with a broken line or a lay-by.

Legal basis: Art. 49 para. 1 point 5 of the Road Traffic Act (Prawo o ruchu drogowym); § 86 para. 8 of the Regulation on road signs and signals