This traffic sign marks a place or a road section:
Close to which children often move or gather, cross the road, or where there is a high risk of their unexpected stepping into the road.
Where many pedestrians should be expected, or many pedestrians cross the road without a pedestrian crossing, e.g. a place for crossing.
With a bus stop of a children transporting bus and where a driver must pay special attention to a possibility that they unexpectedly step into the road.