Disabled children' Supplementary Plate - Post Mount Diagram 547.7 R2/RA2This supplementary plate stating Disabled children is for use where children may be attending a school or playground that caters to children that are disabled or have other disabilities. The plate must be used in conjunction with sign diagram 545. There different faces available including Blind Children and Deaf Children if you require any of these alternative faces please phone us. The sign warns drivers that children may be in the road and unable to