How must you behave?

In this scenario, you should reduce your speed to a walking pace immediately and remain ready to brake. The presence of a red ball in the road suggests there might be a child or an animal nearby, which requires you to anticipate sudden movements.

Under German traffic regulations, it is crucial to act cautiously in situations where children may be present, particularly in residential areas. This means not only slowing down significantly but also being prepared to stop if necessary, ensuring safety for all road users. Maintaining the same speed while approaching such a potential hazard is unsafe and not compliant with traffic laws designed to protect vulnerable individuals.