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SAE J4004 (AUG2024)

Current Revision

Positioning the H-Point Design Tool - Seating Reference Point and Seat Track Length


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This SAE Recommended Practice describes how to position and posture the H-point design tool (HPD) described in Appendix B, and how to establish the seating reference point (SgRP), design H-point travel path, and other key reference points that are used in the design and specification of both driver and passenger seat positions. This practice also provides a method for determining the length of the seat track for a driver seat that adjusts fore/aft. The seat track length is based on a desired level of driver accommodation, assuming a U.S. population containing an equal number of male and female drivers. The procedure can be used to establish driver seat track accommodation for new vehicle designs or to evaluate accommodation in existing vehicles. A general method for determining driver seat track length for any driver population (male and female stature distribution) at any selected accommodation percentile and gender mix is given in Appendix A. Application of this document is limited to Class A Vehicles (Passenger Cars, Multipurpose Passenger Vehicles, and Light Trucks) as defined in SAE J1100.

SDO SAE: SAE International
Document Number J4004
Publication Date Aug. 23, 2024
Language en - English
Page Count
Revision Level 202408
Supercedes
Committee
Publish Date Document Id Type View
Aug. 23, 2024 J4004_202408 Revision
Aug. 29, 2008 J4004_200808 Revision
Aug. 11, 2005 J4004_200508 Revision