Impact Attenuator
Auto racing, John Fitch (racing driver), Kinetic energy, Strafing, Traffic barrier, Crumple zone, Motor vehicle
978-613-4-94272-0
6134942723
72
2011-03-26
29.00 €
fre
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An impact attenuator, also known as a crash cushion or crash attenuator or cowboy cushions, is a device intended to reduce the damage done to structures, vehicles, and motorists resulting from a motor vehicle collision. Impact attenuators are designed to absorb the errant vehicle's kinetic energy and/or redirect the vehicle away from the hazard, and from roadway machinery or workers. Impact attenuators, typically composed of sand- or water-filled barrels or modules, are usually placed in front of fixed structures near freeways, such as gore points, Jersey barrier introductions, or overpass supports. Temporary versions can be used for road construction projects.Truck-mounted versions (TMA), similar to railcar buffers, can be deployed on vehicles that are prone to being struck from behind, such as snow plows and road construction or maintenance vehicles. One caveat of a truck-mounted attenuator deals with the truck itself. It has been observed that with the weight of the attenuator and the potential force of impact in a vehicular collision, that the attenuator will facilitate a transfer of forward momentum from the impacting vehicle to the truck.
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