Abstract: Road safety barrier belonging to the type of barriers that are mounted along road shoulders and outer edges to serve as protective elements and it is configured by a plurality of vertical poles to which the upper w-beam is affixed above and the corresponding lower support element is affixed below to allow assembling the protective woven mesh element to this structure but at a distance from the plurality of vertical poles, said structure comprising support elements (4) inferior to the vertical poles (2), a mesh which different longitudinal areas are woven in different warp densities that is then secured between the w-beam (3) and the lower support elements (4), washers (10) and fixing plates (9) made from ABS or polyamide which serve to secure the woven mesh (5) to the w-beam and the lower support elements (4) and additionally act as energy absorbing elements.