In a professional capacity, I have been indirectly involved with a number of fatal quad bike accidents in recent months. This author remains distressed at the number of young lives lost on Australian rural properties associated with the use of these machines.
This is often associated with the lack of safety gear, including helmets, when operating these bikes. They have become the most deadliest machine on Australian farms, being involved double the amount of tractor incidents. All too often it is children under the age of 16 that are killed or injured whilst riding them, often without the use of helmets. Quad bikes are essentially unstable and are easily involved in rollover accidents with dire consequences for the rider. Manufacturers remain reluctant to install rollbars to help protect riders.
See the SMH report here for more information.