What must a medical examiner do with respect to schedule 1 and narcotic drugs?

The correct answer highlights the importance of safety and regulatory compliance in the context of commercial driving. Medical examiners are tasked with ensuring that drivers are fit for duty and do not have impairments that could jeopardize road safety. Schedule 1 drugs are classified as substances with high potential for abuse and no accepted medical use, while narcotic drugs can have significant effects on a person's ability to operate a vehicle safely.

The chosen response indicates that a medical examiner can allow the use of these substances only if they are prescribed and do not impact the driver's ability to operate a commercial vehicle safely. This ensures a careful evaluation of the driver’s condition, taking into account the medical guidance provided by a qualified healthcare professional about any medication.

This approach protects public safety by requiring evidence that the driver's use of these medications will not impair their capability to drive, reflecting a balance between medical treatment and the responsibility of driving safely. The examiner needs to prioritize the health and safety of both the driver and the general public by adhering to federal regulations and guidelines regarding drug use in commercial driving.