How does a medical examiner establish a driver's fitness for duty?

A medical examiner establishes a driver's fitness for duty primarily by evaluating the driver's medical history and current health status. This evaluation is crucial as it helps determine if there are any medical conditions that could impair the individual's ability to operate a vehicle safely. Factors considered include chronic illnesses, medications that may affect cognitive or physical abilities, and any history of substance abuse.

By focusing on the driver's health rather than external factors like vehicle safety features or traffic violations, the medical examiner ensures that the individual is physically and mentally capable of driving. This assessment protects not only the driver but also the public by aiming to mitigate the risk of accidents caused by medical incapacitation. Thus, a thorough understanding of the driver's health is fundamental to making informed decisions about their fitness for duty.