For groups I, II and III, all restraint devices utilising a ‘lap strap’ must positively guide the ‘lap strap’ to ensure that the loads transmitted by the ‘lap strap’ are transmitted through the pelvis.
I, II ja III rühma turvaseadiste puhul, mis kasutavad vöörihma, peab vöörihm olema sellises asendis, et rihmale langeks vaagnavöötme koormus.