2+1 roads are clearways or regular country roads that have two lanes in one direction and one lane in the other, alternating every few kilometres, and are separated with a central barrier (usually a steel cable barrier). The second lane allows faster-moving traffic to overtake slower vehicles at regular intervals.
On 2+1 roads, head-on collisions are much less common than on country roads and clearways without a central barrier.
Most 2+1 roads are clearways, but not all. Some 2+1 roads are common country roads. When driving on 2+1 country roads you must be prepared for junctions, pedestrians, cyclists and slow-moving vehicles such as tractors.
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