According to official statistics, road transport is one of the most dangerous and costly in terms of life and costs of hospitalization and post-accident medication. Thus, safety is a matter of great interest at national level and, perhaps internationally. Road safety on public roads in Romania is low compared to international standards. The mortality rate is more than twice the EU average. Given that road traffic and victim maintenance costs are a real economic problem, a European harmonization of the recording and assessment of events involving the bodily injuries of those involved in road events is necessary. Road events are one of the main causes of mortality in modern society. For this reason, the safety of motor vehicles has become the most important issue in their development. Road traffic injuries are a problem that can be controlled by proper attention to traffic avoidance strategies. Side impact is the second major cause of mortality and injury after frontal impact in road traffic analysis.

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The paper presents the studies realized a similar biomechanical system composed by neck, head and muscles complementary to the human neck. The model was defined starting with a real human object and which was made CT, after in a CAD environment, The main movements (axial rotation, lateral bending, and flexion-extension) has been obtained behavior based on date, tables or diagrams. The virtual model composed of the neck, head andmuscles, which was included in a complex system (similar with a car system), and a lot of virtual simulations car crash tests were made. As well is studied the behavior of shape memory springs, with which has been achieved anatomical-functional similarity with those of a human subject, comparing them in the end with the ones determined virtually with anatomical-myographic studies.