Car accidents are frequently the cause of neck injuries ; these in juries are painful, expensive for society and challenging to simulate. Until now, the injury criteria are computed based on acceleration data of the test dummy used in the safety crash tests, both for pedestrian safety tests and interior pas senger safety. Human body models (HBM) can be used to move this assessment procedure toward soft tissues related injury criteria. For these reasons, the main scope of this work is to try to explain how injury in the neck occurs based on stress and strain analysis of the soft tissues present in the neck employing nite element models.