The BioRID-2 was developed as a 50th percentile male dummy to measure responses in low speed rear-end impact tests. The dummy includes an articulated thoracolumbar spine and neck made from a composite material.

The torso construction includes a water-filled abdomen and a pliable moulding fitted around the flexible spinal assembly and attached through spine torso pins protruding outward from the central structure. Torsion bars are used in each of the thoracic-lumbar pivot joints to control the motion. The motion of the cervical vertebrae assembly is controlled by a single cable attached to a damper and two cables attached to springs that act as neck muscle substitutes. Also included between the vertebrae are elastomer bumpers to control the end of travel response.