Varen prostor je prikazan na sliki 3 Priloge IV in definiran glede na navpično referenčno ravnino, ki je na splošno vzdolžna sredinska ravnina traktorja, in poteka skozi referenčno točko sedeža, opisano v 2.3, in skozi središče volanskega obroča.
The zone of clearance is illustrated in Annex IV, fig. 3, and is defined in relation to a vertical reference plane generally longitudinal to the tractor and passing through a seat reference point, described in 2.3, and the centre of the steering wheel.