Seating reference point
Seating reference point (SgRP) means the unique design H-point, as defined in Society of Automotive Engineers (SAE) Recommended Practice J1100, revised June 1984, Motor Vehicle Dimensions (incorporated by reference, see 571.5), which:
(1) Establishes the rearmost normal design driving or riding position of each designated seating position, which includes consideration of all modes of adjustment, horizontal, vertical, and tilt, in a vehicle;
(2) Has X, Y, and Z coordinates, as defined in Society of Automotive Engineers (SAE) Recommended Practice J1100, revised June 1984, “Motor Vehicle Dimensions” (incorporated by reference, see § 571.5), established relative to the designed vehicle structure;
(3) Simulates the position of the pivot center of the human torso and thigh; and
(4) Is the reference point employed to position the two-dimensional drafting template with the 95th percentile leg described in Society of Automotive Engineers (SAE) Standard J826, revised May 1987, “Devices for Use in Defining and Measuring Vehicle Seating Accommodation” (incorporated by reference, see § 571.5), or, if the drafting template with the 95th percentile leg cannot be positioned in the seating position, is located with the seat in its most rearward adjustment position.