Which of the following is part of the regulatory non-discretionary standards?

The correct answer is that hearing and epilepsy are part of the regulatory non-discretionary standards set by the DOT for medical examiners. Non-discretionary standards are specific medical conditions that disqualify individuals from holding a commercial driver's license (CDL) unless they meet certain established criteria.

Hearing ability is crucial for safe driving, as it is essential for detecting sounds that indicate hazards while operating a vehicle. For example, a driver must be able to hear horns, sirens, and other important auditory signals in the environment. If an individual has hearing loss that does not meet the standards, they may not be allowed to drive.

Epilepsy is another critical condition in this context. A history of seizures can significantly impair a driver's ability to operate a vehicle safely. For an individual with epilepsy to be considered fit for driving, they must have been seizure-free for a specific period and under a physician's care.

Other options include blood pressure and diabetes, which, while important conditions for assessing overall health and fitness for duty, do not fall under the strictly non-discretionary regulatory standards like hearing and epilepsy do. Blood pressure can be managed or treated, and diabetes may not necessarily disqualify a driver if it is well-controlled. Thus,