Paragraph 31 Restrictions on the placing of temporary signs
The signs shown in any diagram in Schedule 12 other than diagrams 7014 and 7103 may be placed only in connection with the execution of works on or near a road or a temporary obstruction thereon, and any such sign so placed and any other sign shown in a diagram in Schedules 1 to 11 so placed shall not be retained on or near the road after the completion of the works or the removal of the obstruction, as the case may be, unless—
it is a sign of the type shown in diagram 7009, in which case that sign may be retained on or near a road after the completion of the works for so long as the traffic authority for the road thinks fit; or
it is a sign of the type shown in diagram 7012 bearing the words “NO GIVE WAY MARKINGS” or “NO STOP MARKINGS”, in which case that sign shall be removed as soon as the road markings have been replaced and in any event not later than 28 days after the completion of the works.