The present invention has been to improve the strength by processing a rim of various signs of a curved surface type, and, to make a graceful appearance, for the purpose of presenting a structure of the traffic signs for preventing accidents caused by pedestrian devised.; To this end, the present invention is to have a shape of a road sign to be produced pressing the foundation plate (1) rim is so bent at an angle of 90 ° around the first border (2) is formed, and wherein the first edge forming portion round the groove bottom mold (4) and the second edge 3 is continuous over the whole edge, insert between the roller-type mold 5 having a rounded convex portion (5a) is rotated sikimeuroseo radius in the range of 5mm and out with (4a) presented the structure of a traffic sign, characterized in that to form proposes new.; It is possible to prevent the artificial damage by being strength is significantly improved as compared with the conventional safety valve by the above structure is a border area round gulge treatment is able to prevent a safety accident due to contact with a pedestrian, an apparently clean, aesthetic effect have.
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