HR-7-12 DRAFT Head Restraint Height and Backset Measured from H-point versus R-Point The data from the Alliance/OICA head restraint and backset measurement study of September 5,2006 was analyzed to determine the change in benefits from that reported in the FMVSS No. 202a Final Regulatory Impact Analysis (NHTSA docket no. 19807) when measurements are made from ..