Impact tests on six reinforced concrete slabs with different cushion layers were performed by dropping concrete boulders from different falling heights. A conventional cushion layer and special cushion systems consisting of high-tensile steel wire meshes filled by cellular glass were tested. The tests reveal the measured reaction forces at the supports, the accelerations in the boulder and in the slab as well as the strains at the upper slab surface and in the bending reinforcement. In addition, a high speed video system recorded the impacts.