5032ed95_Driver_Safety_CDL_Guidelines_or_various_medical_conditions__Condition
[Driver is Qualified if:] He/she has no established medical history or clinical diagnosis of a respiratory condition that would interfere with the ability to control and drive a motor vehicle safely. [Exceptions/Considerations] The concern is whether a respiratory condition may result in a lapse of consciousness, dizziness, fatigue, or decreased mental awareness which may interfere with the ability to safely operate a motor vehicle. [Condition] 
Respiratory System
Driver Safety CDL Guidelines
Condition