The sign is known as "Groups of People" (1044-12). This traffic sign indicates that you are entering an area where there is a high presence of pedestrians or groups of people. It serves as a warning to drivers to be particularly cautious and to observe lower speeds, especially in areas where people might be crossing the road or congregating.
According to German traffic laws, when encountering this sign, you should remain vigilant and prepared to stop if necessary to ensure the safety of pedestrians. It is especially important to pay attention in urban areas, near schools, parks, and events where large groups might gather. Always prioritize the safety of people in these zones.