xmlns:atom="http://www.w3.org/2005/Atom"
27. The sign shown in diagram 545, when placed in combination with—
(a)the plate shown in diagram 547.1; or
(b)the plate shown in diagram 546, 547.1 or 547.7 together with the light signal shown in diagram 4004,
may be placed only at or near a school crossing place.