3.1 Relevance to the driving task
3.1.1 Effects of diabetes on driving
Diabetes may affect a person’s ability to drive, either through a ‘severe hypoglycaemic event’ or from end-organ effects on relevant functions, including effects on vision, the heart and the peripheral nerves and vasculature of the extremities, particularly the feet. In people with type 2 diabetes, sleep apnoea is also more common (refer to section 8. Sleep disorders). The main hazard in people with insulin-treated diabetes is the unexpected occurrence of hypoglycaemia.
3.1.2 Evidence of crash risk
There is a small but appreciable increase in motor vehicle crash risk for drivers with diabetes. The potential effects of hypoglycaemia are of most concern to road safety. However, findings point to a higher risk among those with a history of severe hypoglycaemia. There is also evidence that ‘tighter control’, as measured by the HbA1c, may be associated with increased crash risk.
The National Diabetes Services Scheme (NDSS) is an initiative of the Australian Government administered by Diabetes Australia. The NDSS provides information and support services to people with diabetes, including information about driving.
The ‘Above 5 to Drive’ resources are also available through Diabetes Australia.