‘Centreplane of occupant’ (C/LO) means the median plane of the 3-D H machine positioned in each designated seating position; it is represented by the coordinate of the ‘H’ point on the ‘Y’ axis.
3-DH-aparaadi kesktasand iga istekoha puhul, kuhu aparaat on paigutatud; seda tasandit kujutab H-punkti koordinaat Y-teljel.