Rockfall hazard in mountainous areas requires the construction of protective structures for the buildings ortransport facilities. Reinforced soil embankments can be effective protections against rockfalls due to the combination of the damping characteristics of the soil and the tensile resistance of the reinforcements. Following the advances in soil reinforcements, the research is ongoing for this type of structures aiming to optimize their shape and reinforcement design. In order to study the influence of the different geosynthetics design, two reinforced soil embankments are tested experimentally. The embankments had vertical facings and a slenderness ratio of two with the purpose to reduce the footprint of the conventional trapezoidal shape. Embankment 1 had two vertical layers of geogrids that divided its cross section in three equal parts, while Embankment 2 had multiple geogrid strips installed horizontally close to the front facing. Horizontal impact tests are performed on the two embankments using reinforced concrete blocks as impactors with the aid of a pendulum device. Several instruments and sensors are used to monitor the behavior of the embankments, namely accelerometers, pressuresensors, strain gauges, rapid cameras and a laser scanner. During the tests, the two embankments experiencedlocal shearing at the impact position and overall backward leaning. Moreover, a waves’ propagation effect isobserved during the first moments of the impact at the sensors installed in the embankments. The speed of thepropagation of these waves appears to be influenced by the reinforcement design of the embankments. After thetests, Embankment 2 was less deformed than Embankment 1, which is attributed to their different reinforcementdesign. According to the strain gauges measurements, the geogrids of Embankment 2 were more mobilized in thevicinity of the impact compared to the ones of Embankment 1. These tests showed that the geogrids installed inhorizontal position close to the front facing are more efficient compared to the ones installed vertically anddeeper in the embankment.