This International Standard provides the specifications and procedures for using the H-point machine (HPM)1)
to audit vehicle seating positions. The HPM is a physical tool used to establish key reference points and
measurements in a vehicle. The H-point design tool (HPD) is a simplified computer-aided design (CAD)2)
version of the HPM, which can be used in conjunction with the HPM to take the optional measurements
specified in this International Standard, or used independently during product design.
These H-point devices provide a method for reliable layout and measurement of occupant seating
compartments or seats. This International Standard specifies the procedures for installing the H-point machine
(HPM) and using the HPM to audit (verify) key reference points and measurements in a vehicle.
The devices are intended for application at designated seating positions. They are not to be construed as
tools that measure or indicate occupant capabilities or comfort. They are not intended for use in defining or
assessing temporary seating, such as folding jump seats.
ISO 20176:2011 Referenced Document
ISO 4130 Road vehicles; Three-dimensional reference system and fiducial marks; Definitions