Blunt abdominal trauma is a major cause of death in automobile accidents. In terms of frequency, the lateral collisions represent the second type of accident after the frontal impact, but it constitutes the first position in relation to the other configurations in terms of severity :​ The abdomen is the part of body most implicated and among the injuried abdominal organs, the liver being the most affected. In order to understand the liver and the abdominal injury mechanisms and determine their impact tolerance, a series of direct impact tests,on the isolated liver and on the right side of the abdomen was undertaken. A tolerance level of 500 N for the liver and three tolerance criteria for the abdomen :​ deflexion criteria (60 mm), force criteria (440 daN) and viscous criteria (1.98 m/s) have been determined. These levels correspond to a degree of 3 on the AIS injury severity scale.