In this situation, are you allowed to use the horn?

In the video you are driving along a residential street between blocks of flats, and an elderly man with a walking stick is slowly crossing the roadway in front of you. You are not allowed to use the horn to hurry him - you must stop and wait. The answer is: no.

The Road Traffic Act prohibits using the horn in a built-up area unless it is necessary because of immediate danger, and prohibits overusing the horn; it also requires you to stop the vehicle to let a person with visibly limited mobility cross. A pedestrian walking slowly does not create any danger - it is you who has to adapt to him, and the horn could frighten him and make him fall. You stop at a safe distance and wait until he steps onto the pavement; you will use the horn only when someone really steps out right in front of your wheels.

Legal basis: Art. 29 para. 2 point 1 and 2 and Art. 26 para. 7 of the Road Traffic Act (Prawo o ruchu drogowym)