This SAE Standard describes head position contours and procedures for locating the contours in a vehicle. Head position contours are useful in establishing accommodation requirements for head space and are required for several measures defined in SAE J1100. Separate contours are defined depending on occupant seat location and the desired percentage (95 and 99) of occupant accommodation.
This document is primarily focused on application to Class A vehicles (see SAE J1100), which include most personal-use vehicles (passenger cars, sport utility vehicles, pick-up trucks). A procedure for use in Class B vehicles can be found in Appendix B.
This revision clarifies the basis of the head position contour shape and adds a locating procedure for Front Passenger head position contours to Appendix C. In addition, definitions were added referring to SAE J941 and updated to align with SAE J1100, and in Section 7.2, the coefficient of A40 was corrected (used to calculate the side view fixed seat eyellipse angle).