The whiplash disorders are associated with huge costs for society. The BioRID (Biofidelic Rear Impact Dummy) dummy and the test procedure are developed to ensure the seat systems optimized to reduce the risk of injury in low-severity rear-end collisions. This paper discussed the BioRID dummy spine structure and calibration procedures. It is found during the dynamic calibration it is very difficult to keep the head neck OC (Occipital Condyle) joint in the static corridor and different head position will obtain the different score in the EuroNCAP whiplash Seat Assessment. A proposal is developed to control the OC joint in the dynamic calibration to ensure the whiplash test can be conducted correctly.