Mother & Child Symbol School Bus Vehicle Reflective SignThe Mother and Child Symbol School Bus Vehicle Reflective Class 1 Sign is a safety sign used on school buses in Australia. It shows a parent holding a child's hand and is made with reflective material to stay visible in low light. The sign warns drivers that children may be getting on or off the bus, so they should slow down and be extra careful. It is usually placed on the front and rear of school buses.