A driver with Stage 3 hypertension (greater than or equal to 180/110) is:

A driver with Stage 3 hypertension, defined as having a blood pressure reading of 180/110 mmHg or higher, is classified as having a serious medical condition that significantly increases the risk of cardiovascular events, such as stroke or heart attack. Due to the potential immediate and severe health risks associated with such elevated blood pressure, regulations stipulate that the individual cannot be medically certified to drive a commercial vehicle while in this condition.

The determination to disqualify is based on safety concerns not only for the driver but also for others on the road. The threshold of 180/110 mmHg poses an unacceptable risk, and the regulations are designed to prevent dangerous situations. Thus, disqualification is necessary until the driver can demonstrate control over their hypertension through treatment, lifestyle changes, or medical management that brings their blood pressure down to an acceptable level for safe driving.

Other choices imply varying levels of certification allowances despite the elevated hypertension, which does not align with the safety standards in place for commercial drivers under these medical conditions.