Warning Sign/Other Danger Post Mounted - 562 R2/RA2 (Face Only)The exclamation mark sign diagram 562 is without a specific message on its own as it is for use only with a supplementary plate. Its use is usually temporary, to alert of a new hazard in the road, however where it is difficult to sign for a permanent hazard such as a Hidden Dip it is permitted for permanent use until the hazard is removed. This may be supplemented by Accident, Ambulance station, Blasting, Blind summit, Census, Dust cloud, Fallen tree,