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The National Highway Traffic Safety Administration (NHTSA) is currently conducting research at the Vehicle Research and Test Center (VRTC) aimed at reducing the number of serious and fatal head injuries due to impact with vehicle upper interior structures. A modified Hybrid III dummy head is currently used to test head injury potential from impacts with vehicle upper interior structures. This headform is propelled into vehicle upper interior structures with the front of the head facing the structure. Head impacts with A-pillars, side roof rails, and B-pillars may occur without the vehicle occupant facing directly into the structure. Since this is the case, it was decided that a featureless free-motion headform should be developed. This headform would not give the appearance of a forehead impacting the side structures of the vehicle. This paper will present the design, development, and testing of a featureless free-motion headform.