Patent ID: 7758277

Claim:
A vehicle crash cushion for decelerating a vehicle comprising: a plurality of support members at least some of which are moveable in a longitudinal direction from an initial position to an impact position, wherein said plurality of support members are spaced apart in said longitudinal direction and define at least in part first, second and third bays between respective pairs of said support members when said support members are in said initial condition, wherein said first bay is positioned forwardly of said second bay and said second bay is positioned forwardly of said third bay; and wherein said first, second and third bays comprise first, second and third energy absorbing structures respectively, wherein said first, second and third energy absorbing structures have first, second and third impact strengths respectively, wherein said first impact strength is greater than said second and third impact strengths and wherein said third impact strength is greater than said second impact strength, wherein said second, third and first bays are collapsible in sequential order as respective support members defining at least in part each of said second, third and first bays are moved in said longitudinal direction from said initial condition to said impact position.