The invention relates to a three-dimensional dummy object (1), in particular for functionally testing driver assistance systems in motor vehicles, comprising a head (8), a skeleton (2), a trunk (13), movable arms, and movable legs. The skeleton (2) comprises a trunk skeleton (3) having cavities, to which the arms and legs are articulated, wherein the legs each have a thigh (6a) and a lower leg (12) articulated to the thigh, wherein a drive unit (18, 18') and a receiver/control unit (22) are installed in the trunk skeleton (3), which receiver/control unit receives signals correlating to the relative velocity (V
rel ) of the moving dummy object as an input quantity, such that the movement pattern of the thighs (6a) and lower legs (12) can be varied according to the relative velocity (V
rel ) of the dummy object (1) by means of an installed movement mechanism.