Engineers are currently attempting to reduce the severity of vehicle accidents by designing and building a safer roadway environment. To accomplish this, consideration must be given to the expected dynamic response of the vehicle and occupant during a collision with roadside obstacles. The report presents the development of an analytical model that predicts the response of an automobile passenger during vehicle motion of a general nature, i.e., a three-dimensional path including simultaneous rotations about the three directions. This model reduces the problem of predicting the accelerations and forces acting on a passenger during a collision or violent maneuver to that of specifying the path of the vehicle as a function of time plus the deformation properties of the vehicle interior. Validation of the model was achieved for frontal collisions. The model's predicted response of a dummy on a test cart compared well with actual test data. The model provides the highway engineer with a tool which will enable him to apply biomechanics data on human tolerance limits to the problem of modifying roadside structures such that occupant injuries during vehicle accidents can be reduced. (Author)


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