What may be the consequences if a driver suffering from diabetes does not control their blood sugar level?

Uncontrolled diabetes in a driver can lead to rapid fluctuations in blood glucose levels. A sudden and significant drop in blood glucose (hypoglycaemia) is particularly dangerous, as it can manifest as impaired concentration and, in extreme cases, lead to a sudden loss of consciousness. A loss of consciousness at the wheel means a complete loss of control over the vehicle and poses a direct threat to the life and health of all road users.