The evaluation method which simulates collisions between the subject vehicle and some other vehicle of a similar size has been developed up to now, by means of frontal impact to flat barrier or offset deformable barrier, etc. There are some reports describing that the injury level tends to become more severe for occupants of light vehicles than those of heavy vehicles, according to the accident data on vehicle-to-vehicle collisions. In this regard, the compatibility of heavy vehicles for the reduction of occupant injury level of lighter vehicles in such collisions is noted. In this paper, the effect of factors has been studied by simulating the deformation of the struck vehicle. The influence on the impact performance of heavy vehicle into frontal impact barrier was also simulated.
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