A university of Iowa study found on average, an Alzheimer’s disease patient commits forty-two safety mistakes while driving, compared to thirty-three among other drivers.
Researchers gave a 35 mile road test to forty people with early-stage Alzheimer’s who still had their driver's licenses.
They compared test results with those from more than a hundred older drivers without dementia who underwent the same trip.
The most common mistakes involved swerving or hugging the center line as another car approaches. Overall errors also rose as a person got older -- regardless of whether or not he or she has the disease.
The authors say more research is needed, but their ultimate goal is to develop an easy doctor's-office exam to help determine when to take the keys away.