Are you obliged to switch on your hazard lights beyond this sign to indicate that the damaged vehicle is stationary?

In the photo, in winter, you are driving along a street in a town; on the right there is a round sign with a blue background, a red border and two crossed red lines - B-36 "no stopping". If your broken-down vehicle stops on the roadway beyond this sign, you have to switch on the hazard warning lights. The answer is: yes.

The Road Traffic Act states that a driver must signal that a power-driven vehicle is parked because of a breakdown or an accident on hard-surfaced roads other than a motorway and an expressway: in a built-up area, when it is parked on the roadway in a place where stopping is prohibited. Sign B-36 means exactly a ban on stopping, and a street in a town, beyond sign D-42, is a built-up area, so both conditions are met. The way to signal this in a built-up area is to switch on the hazard warning lights; only when the vehicle has no hazard warning lights do you switch on the sidelights (position lights) and place a warning triangle behind the vehicle or on it, no higher than 1 m. Signalling is required for the whole time the vehicle is parked. Outside a built-up area, in addition to the hazard warning lights, there is a triangle 30-50 m behind the vehicle, and on a motorway 100 m.

Legal basis: Art. 50 para. 1 point 2 letter b, para. 2 point 2 letter b and para. 3 of the Road Traffic Act (Prawo o ruchu drogowym); § 28 para. 2 of the Regulation on road signs and signals