When the vehicle is fitted with a partition or a wall, the length shall be measured from a vertical plane tangent to the rear outermost point of the partition or the wall to the rear internal pane or door or tailgate, as the case may be, in closed position;
I gcás ina mbeidh laindéal nó balla feistithe ar an bhfeithicil, tomhaisfear an fad ó phlána ceartingearach atá tadhlaíoch don phointe is faide amach ar an laindéal nó ar an mballa go dtí an plána cúil inmheánach nó go dtí an doras nó go dtí an comhla chúil, de réir an cháis, agus é dúnta;