Patent ID: 9732484
Date: 2017-08-15
CPC Classifications: E01F

Claim:
1. A highway crash attenuation system comprising: W-beam rail elements attached to a plurality of vertical posts; an impact terminal having a feeder chute for guiding one or more of said W-beam rail elements through said impact terminal; an anchor cable extending from a first breakaway post to an anchor cable release mechanism releasably attached to at least one of said W-beam rail elements downstream of said first breakaway post, said first breakaway post comprising: an upper post section and a lower post section, said upper post section having a lateral support lip extending along a lower edge of a downstream face of said upper post section and having first through holes in opposing lateral sides of said upper post section, said lateral support lip cooperating with a lower edge of a strut disposed on a downstream face of said lower post section between opposing lateral sides of said lower post section and through holes in opposing lateral sides of said lower post section to releasably retain said upper and lower post sections in a first vertically aligned position when a mounting bolt is extended through said first and second through holes in said lateral sides of said upper and lower post sections prior to vehicular impact with said first breakaway post.