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An accurate and robust target vehicle model was developed for vehicle compatibility applications. Although vehicle compatibility simulation involves a bullet vehicle hitting a target vehicle, the focus of this paper is to develop a target vehicle model. To ensure the robustness, the target vehicle model needs to provide reasonable responses under different impact conditions. This can be achieved by calibrating the model against different physical tests. Significant effort was taken to improve the accuracy of the target vehicle model. In the calibration process, some components were found to have significant effects on the global responses. These components play different roles in different crash modes. To improve the overall correlation with test, different component tests were also designed and conducted to understand the characteristics and improve the modeling of these critical components.