is provided, except at special points or temporarily, with separate carriageways for the two directions of traffic, separated from each other by a dividing strip not intended for traffic or, exceptionally, by other means;
atá feistithe, ach amháin ag pointí speisialta nó go sealadach, le carrbhealaigh ar leith don trácht ó dhá threo, scartha óna chéile le stiall dhealaithe nach bhfuil beartaithe le haghaidh tráchta, nó go heisceachtúil, trí mhodhanna eile;