For 2 miles' Supplementary Plate - Post Mount Dia. 570 R2/RA2Diagram 570 is the sign plate showing the distance the signed hazard will be on the road in yards or miles. The distance plate comes in multiples of 100 yards (100 yds, 200 yds, 300 yds, etc.), 50 yards (50 yds, 150 yds, 250 yds, etc.) or miles (1 mile, 2 Miles, etc.). The plate can read 'yards', 'yds', 'mile' or 'miles'. The Traffic Signs Manual recommends using these plates where possible to make sure drivers stay alert for the danger even when they