What is the H-point and how is it used in vehicle interior design?

The H-point (hip point) is the theoretical pivot point between torso and upper leg of a seated occupant, representing hip joint location. It serves as the key reference for interior design, determining seat height, steering wheel position, pedal location, and sightlines. H-point location is defined using SAE J826 manikin tools. Package optimization involves balancing H-point height (lower for sporty feel, higher for ease of entry) with other accommodation requirements while maintaining proper relationship to ground, controls, and vision zones.