System and method for testing crash avoidance technologies

A method of electronically changing the braking bias among the propulsion structures of a Dynamic Motion Element for use in testing crash avoidance technologies in a subject vehicle, comprising the steps of:

• providing a 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, the upper surface above the ground by less than 350 millimeters, 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 at least two rotational structures, including at least one driven rotational structure coupled with an electronically-controlled power source, and an electronically-controlled braking system attached with and capable of applying braking force to the at least two rotational structures;
• and
• electronically controlling the braking system to change the amount of braking force applied to one of the rotational structures relative to the amount of braking force applied to the other rotational structure.