A two plus one lane road consists of two lanes travelling in the same direction and one lane travelling in the opposite direction. Where the roadway consists of only one lane in a single direction, similar road marking and delineation principles to a two-lane two-way road should be adopted.
Where the roadway consists of two lanes travelling in the same direction, similar principles of road marking and delineation to a multi-lane road should be adopted.
For the type of centre-line treatment that could be used on two plus one roads refer to treatments in the centre of the road.
