Safety fence for roads

Claim 1

IN A SAFETY FENCE FOR DELINEATING AT LEAST ONE BOUNDARY OF A ROAD AND TO PREVENT A COLLIDING AUTOMOBILE FROM ESCAPING THAT BOUNDARY, THE COMBINATION COMPRISING A PLURALITY OF SPACED POST MEMBERS, EACH OF SAID POST MEMBERS HAVING A SOCKET MEMBER, SAID SOCKET MEMBER BEING FIRMLY EMBEDDED AND PROTRUDING FROM THE GROUND ALONG THE EDGE OF THE ROAD; A SHEARING PIN FOR EACH OF THE SOCKET MEMBERS, SAID SHEARING PIN HAVING AN UPPER AND A LOWER PORTION, SAID LOWER PORTION BEING ACCEPTED WITHIN THE PROTRUDING PORTION OF SAID SOCKET MEMBER, SAID SHEARING PIN HAVING A WEAKENED PORTION THEREON WHICH WILL FAIL UPON THE INTRODUCTION OF A PREDETERMINED FORCE; A POST MEMBER DETACHABLY ATTACHED TO SAID SHEARING PIN AND VERTICALLY SPACED, ALONG SAID SHEARING PIN, FROM SAID SOCKET MEMBER, SAID UPPER PORTION OF SAID SHEARING PIN BEING ACCEPTED WITHIN SAID POST MEMBER, SAID SHEARING PIN HAVING A COLLAR PORTION, SAID COLLAR PORTION HAVING A DIAMETER LARGER THAN SAID UPPER AND LOWER PORTIONS, SAID COLLAR PORTION OVERLYING THE PROTRUDING END OF SAID SOCKET MEMBER AND SEPARATING SAID SOCKET MEMBER AND SAID POST MEMBER; AND YIELDABLE CABLE MEANS FIXEDLY ATTACHED TO EACH OF SAID POST MEMBERS THEREBY INTERCONNECTING SAID POST MEMBERS, SAID CABLE MEANS CONSTRAINING THE IMPACT FORCE OF AND REORIENTING THE DIRECTION OF A COLLIDING VEHICLE THROUGH THE INCREASE OF SLACK CAUSED BY YIELDING OF THE CABLE MEANS WHICH RESULTS WHEN A COLLIDING VEHICLE CREATES A SUFFICIENT FORCE ON THE CABLE MEANS TO CAUSE THE SHEARING PINS TO FAIL AND THE POST MEMBERS AND SOCKET MEMBERS JOINED THEREBY TO BECOME DISORIENTED.