In this scenario, if you see a man staggering along the road, do you have the right to use your audible warning signal?

In the video, you are driving along a residential street in the early evening between parked cars; in front of you, a staggering man in a blue-and-brown jacket is walking down the middle of the roadway and does not react to your car. You have the right to use the horn. The answer is: yes.

The Road Traffic Act states that the driver of a vehicle may use an audible or light signal when it is necessary to warn of danger; however, it prohibits misusing signals and using the horn in a built-up area, unless it is necessary because of immediate danger. A staggering pedestrian walking down the middle of a narrow roadway with his back to you is exactly such a situation: he does not see you or hear you, he may step sideways or fall at any moment, and between the parked cars you have little room to go around him. A short signal is meant to make him aware that a car is coming - it is not meant to hurry him. Using the horn does not release you from your other duties: you slow down to walking pace, keep a large distance and stop if the pedestrian does not get out of the way. You overtake a staggering person, for example a drunk one, as widely as possible, because their reactions are unpredictable.

Legal basis: Art. 29 para. 1 and para. 2 point 1 and 2 and Art. 24 para. 2 of the Road Traffic Act (Prawo o ruchu drogowym)