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This document provides technology, terminology, and procedural definitions common in Motor Vehicle seat design and testing.

This procedure provides a method of determining a benchmark SgRP position for adjustable Driver’s seats in Class A vehicles where the design intent information is not available. Class A vehicles include passenger cars, multipurpose passengervehicles, and vans with Seat Heights (H30) greater than 127 mm and less than 405 mm for the purposes of this document. Once the Driver’s Seat Benchmark SgRP is determined other seating positions can be readily benchmarked based on the standard procedures. This document references installation procedures using the SAE J826 H-point Machine. If desired the document can be adapted to use the HPM-II by substituting the appropriate SAE J4002 instatllation procedures. In that case, the use of the HPM-II should be clearly documented. Since the SgRP is the basis for many interior benchmark dimensions this information can be used to assess or compare vehicle interiors in a standard repeatable way based on the packaging limitations of the property.

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.

These test procedures apply to complete seat systems (production seats or prototypes built at the intended manufacturing quality); however, the procedures can be modified for subsystem or component level testing.

These test procedures apply to complete seat systems (production seats or prototypes built at the intended manufacturing quality); however, the procedures can be modified for subsystem or component level testing.

This document provides dimensional definitions that facilitate geometric quantification and evaluation of seats. Linear, radial, and angular surface dimensions included in this document are intended to approximate shape characteristics based on defined points of interest and not as a method needed to reproduce complex surface contours. In many cases, other points across the seat surface shape may exceed or not reach the boundary defined by these simple geometric definitions. Dimensions described in this document have been designed to be measured in a CAD environment; however, many dimensions require the HPD position and attitude. This can be obtained by physically establishing H-point using benchmark or auditing procedures OR by measuring the HPD within a CAD or modelling system. Refer to the appropriate document for these procedures.

This recommended practice describes boundaries of hand control locations that can be reached by a percentage of different US driver populations in passenger cars, multi-purpose passenger vehicles, and light trucks (Class A vehicles). This practice is not applicable to heavy trucks (Class B vehicles).

This recommended practice describes boundaries of hand control locations that can be reached by a percentage of different US driver populations in passenger cars, multi-purpose passenger vehicles, and light trucks (Class A vehicles). This practice is not applicable to heavy trucks (Class B vehicles).

This recommended practice describes boundaries of hand control locations that can be reached by a percentage of different driver populations in passenger cars, multi-purpose passenger vehicles, and light trucks (Class A vehicles). This practice is not applicable to heavy trucks (Class B vehicles).

This recommended practice describes boundaries of hand control locations that can be reached by desired proportions of different driver populations in passenger cars, multi-purpose passenger vehicles, and light and medium trucks. This practice is not applicable to heavy trucks.

This recommended practice describes boundaries of hand control locations that can be reached by desired proportions of different driver populations in passenger cars, multi-purpose passenger vehicles, and light and medium trucks. This recommended practice is not applicable for heavy trucks.

The devices of this SAE Standard provide the means by which passenger compartment dimensions can be obtained using a deflected seat rather than a free seat contour as a reference for defining seating space. All definitions and dimensions used in conjunction with this document are described in SAE J1100. These devices are intended only to apply to the driver side or center occupant seating spaces and are not to be construed as instruments which measure or indicate occupant capabilities or comfort. This document covers only one H-point machine installed on a seat during each test. Certified H-point templates and machines can be purchased from: SAE International 400 Commonwealth Drive Warrendale, PA 15096-0001 Specific procedures are included in Appendix A for seat measurements in short- and long-coupled vehicles and in Appendix B for measurement of the driver seat cushion angle. Specifications and a calibration inspection procedure for the H-point machine are given in Appendix C.

The devices of this standard provide the means by which passenger compartment dimensions can be obtained using a deflected seat rather than a free seat contour as a reference for defining seating space. All definitions and dimensions used in conjunction with this standard are described in SAE J11001. The devices described in this standard are intended for applications concerning seated driver side or center occupant accommodation spaces only and are not to be construed as instruments which measure or indicate occupant capabilities or comfort. This standard covers only one H-point machine installed on a seat during each test. Certified H-point templates and machines can be purchased from:

The devices of this standard provide the means by which passenger compartment dimensions can be obtained using a deflected seat rather than a free seat contour as a reference for defining seating space. All definitions and dimensions used in conjunction with this standard are described in SAE J11001. The devices described in this standard are intended for applications concerning seated driver side or center occupant accommodation spaces only and are not to be construed as instruments which measure or indicate occupant capabilities or comfort. This standard covers only one H-point machine installed on a seat during each test. Certified H-point templates and machines can be purchased from:

The devices of this SAE Standard provide the means by which passenger compartment dimensions can be obtained using a deflected seat rather than a free seat contour as a reference for defining seating space. All definitions and dimensions used in conjunction with this document are described in SAE J1100. The devices described in this document are intended for applications concerning seated driver side or center occupant accommodation spaces only and are not to be construed as instruments which measure or indicate occupant capabilities or comfort. This document covers only one H-point machine installed on a seat during each test. Certified H-point templates and machines can be purchased from:

The devices of this SAE Standard provide the means by which passenger compartment dimensions can be obtained using a deflected seat rather than a free seat contour as a reference for defining seating space. All definitions and dimensions used in conjunction with this document are described in SAE J1100. The devices described in this document are intended for applications concerning seated driver side or center occupant accommodation spaces only and are not to be construed as instruments which measure or indicate occupant capabilities or comfort. This document covers only one H-point machine installed on a seat during each test. Certified H-point templates and machines can be purchased from:

The devices of this SAE Standard provide the means by which passenger compartment dimensions can be obtained using a deflected seat rather than a free seat contour as a reference for defining seating space. All definitions and dimensions used in conjunction with this document are described in SAE J1100. The devices described in this document are intended for applications concerning seated driver side or center occupant accommodation spaces only and are not to be construed as instruments which measure or indicate occupant capabilities or comfort. This document covers only one H-Point machine installed on a seat during each test. Certified H-Point templates and machines can be purchased from: Specific procedures are included in Appendix A for second seat measurements in short-coupled vehicles and in Appendix B for driver seat measurement of Cushion Angle.

The devices of this SAE Standard provide the means by which passenger compartment dimensions can be obtained using a deflected seat rather than a free seat contour as a reference for defining seating space. All definitions and dimensions used in conjunction with this document are described in SAE J1100. These devices are intended only to apply to the driver side or center occupant seating spaces and are not to be construed as instruments which measure or indicate occupant capabilities or comfort. This document covers only one H-point machine installed on a seat during each test. Certified H-point templates and machines can be purchased from: SAE International 400 Commonwealth Drive Warrendale, PA 15096-0001 Specific procedures are included in Appendix A for seat measurements in short- and long-coupled vehicles and in Appendix B for measurement of the driver seat cushion angle. Specifications and a calibration inspection procedure for the H-point machine are given in Appendix C.

The devices of this standard provide a method of passenger compartment dimensioning using a deflected seat rather than a free seat contour as a reference for defining seating space. A system of dimensions which may be used in conjunction with this standard is described in SAE J11001. The devices described in this standard are intended for applications concerning seated occupant accommodation space only and are not to be construed as instruments which measure or indicate occupant capabilities or comfort. Additional detailed specifications and full-scale drawings of the devices may be obtained from SAE by ordering drawings supplementary to SAE J826. A videotape film of the installation procedure is also available.