Patent ID: 8755999

Claim:
A Dynamic Motion Element for use in testing crash avoidance technologies in a subject vehicle, the Dynamic Motion Element comprising: a body comprising an upper surface wherein the upper surface is adapted to support a soft-body having the size and shape of a vehicle, or a portion of a vehicle the body having at least one tapered side so as to allow the subject vehicle to drive up to and on the upper surface with minimal to no damage to the subject vehicle or the Dynamic Motion Element, the body supported by a plurality of wheels; and a belt drive system for providing power to at least one of the wheels, the belt drive system comprising: a belt connected to a drive pulley and adapted to transfer power from the drive pulley to a driven pulley, the belt defining a belt plane and wherein the driven pulley is connected to at least one of the wheels; an articulating arm that pivots about an pivot axis within the belt plane, wherein the driven pulley is connected to the articulating arm such that it can pivot about the pivot axis; and a tensioner pulley connected to the articulating arm such that it can pivot about the pivot axis, wherein the tensioner pulley is in contact with the belt.