What danger does the triangular sign shown in the image warn of?

Question

DentroTest · Accepted Answer

The sign shown is P-21a, "Children": a triangular warning sign with a red border and white background, which warns of the proximity of a place frequented by children, such as a school, a playground, etc. On seeing it, it is advisable to slow down and pay extreme attention, because children may make sudden movements or burst unexpectedly onto the roadway. To say that it warns of a place reserved for adults and children, or of the continuous crossing of adult pedestrians, is a mistake: for pedestrian crossings P-20a, "Pedestrian crossing", is used, and for a section with heavy pedestrian traffic, P-20b, "Pedestrians".

What danger does the triangular sign shown in the image warn of?

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