SAE J4002

H-Point Machine (HPM-II) Specifications and Procedure for H-Point Determination — Auditing Vehicle Seats

Issuing bodySAE
CommitteesSAE International
First issued2004
Latest revision2022
Statusactive
Categoryindustry
Topicscontrol_interfaces
Referencehttps://www.sae.org/standards/content/j4002_202202/

Scope

Recommended Practice specifying the second-generation H-point machine (HPM-II) and the procedure for installing it and auditing key driver-package reference points and measurements in a built vehicle seat. The companion H-point design tool (HPD) is a simplified CAD version usable in design. Consolidates HPM-II / ASPECT manikin auditing and calibration; foundational to driver seating, reach, and sightline geometry.

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