Bend Ahead Post Mounted Sign - Diagram 512 R2/RA2 (Face Only)Diagram 512 is used to give warning of a harsh turning which a driver may find difficult to safely pass through without slowing down and where the severity of the turning isn't easily seen in any condition. There are two versions, 'Left shows a bend to the left and 'Right is for a bend to the right. This sign should be used sparingly to only indicate a bend hazard. Overuse of this sign on the road may reduce its effectiveness. There is no objective