From the Bicycle Victoria Website
A research project which fitted cameras to bike helmets to observe traffic has confirmed what riders have long suspected—drivers are not paying attention.
Of all the incidents recorded by the cameras drivers were at fault 87 per cent of the time, and in 83 per cent of those cases the drivers appeared oblivious of their errors. Drivers of 4WD vehicles were highly likely to failure to observe cyclists.
On the positive side the bad driving did not generally have serious consequences for riders because the videos suggested that cyclists were highly aware and could react rapidly to traffic situations and avoid collisions and near-collisions.