Patent ID: 7497640

Claim:
A road safety barrier comprising: a plurality of posts rigidly mounted on or in the ground, the barrier having a length in a direction from one post to another; and a plurality of ropes supported by the posts, each rope following a sinuous path between the posts and being held in tension against the posts and imparting a bending moment to each post; wherein the sinuous path for at least one of the plurality of ropes is characterized by the rope passing from a first side of a first post and to an opposite side of a second post, progressively along the length of the plurality of posts; and wherein the sinuous path for at least a second one of the plurality of ropes is characterized rope passing from an opposite side of the first post and to a first side of the second post, progressively along the length of the plurality of posts; and wherein at least one of the posts is constructed and arranged relative to the ground to have a bending yield strength greater than the bending moment such that the post remains upright to overcome frictional forces of the sinuous paths of the ropes on the post in the event of an impact on the barrier in an area of the barrier that does not include the at least one post.