EntityQ519551· pop 9· linked from 29 articlesimpact attenuatorSign in to savefixed cushion intended to reduce the damage from a car crashConnectionsUnited StatesCountryNew ZealandCountryWorld War IIConceptInternational Standard Book NumberEntitykinetic energyEntitycontrolled-access highwayEntityfrictionEntitytraffic collisionEntityLibrary of Congress Control NumberEntityauto racingEntitymaterialEntitySan BrunoEntitydeformationEntityshock absorberEntityhighwayEntitymotor vehicleEntitymagnesium chlorideEntitysnowplowEntityoverpassEntity1955 Le Mans disasterEntityCategoriesRoad infrastructureRoad safety