Originally Posted by
JDNSW
When you assume there is another lane to move into, you miss the point that by far the majority of roads in NSW (and the rest of Australia), including highways, have only one lane in each direction. Riding abreast means that traffic travelling in the same direction has to slow to the speed of the bicycle, perhaps from 110 to 20 until it is safe to overtake, which could be several kilometres where there is a long stretch of double centre line, for example on parts of the Hume and Newell highways. Your recommendation does not add to safety. Fortunately, most cyclists (but not quite all) act sensibly and either pull over for traffic in the same direction or travel in single file close to the left edge.
John