Quad Bikes are big, heavy and unstable.

Their high centre of gravity, especially when combined with a load strapped to the back, can result in the vehicle rolling over. According to Safe Work Australia, this has caused nine deaths since 1 January 2015.

This calendar year of 2015 there have been 15 quad bike fatalities across Australia. One in Northern Territory, two each in New South Wales and Tasmania and three each in Western Australia and Victoria and four in Queensland.