Energy absorbing system for fixed roadside hazards

A shock absorber to minimize the consequences of a collision between a vehicle and a risk (310) the edge of the fixed carriageway, comprising: means (188, 189) fault extending in a first direction and having first and second ends; a set (40) slidably sled has a nose (83) located at the first end and being movable in the first direction when it has been hit, the assembly (40) slidably sled comprising a cutter (206) moving through the medium of fault when the assembly (40) slidably sled moves in the first direction; a group of panels (160) extending from the first end to the second end, the structured and arranged to be located on the ground to make contact with an impacting vehicle after the panels shock absorber is installed; and a frame (60a-60e) located between the nose and the second end, supporting the frame panels, with the folding frame toward the second end when the nose has received an impact, resisting the frame collapse in the first direction when the panels are impacted in the second direction which is perpendicular to the first direction; wherein each panel (160) comprises a slot (164) extending from a location near the upstream end to a location that is near the downstream end; the panels (160) are arranged to engage the frame (60a-60e) in an overlapping manner, the panels that the downstream end overlap up of a panel and the downstream end of another panel, wherein the upstream end of one panel comprising fixedly coupled to the frame by a fastener (168) and the fastener (168) a spacer (170) is received by the slot (164) near the downstream end of another panel comprising.