Testing and treatment for sleep apnea can prevent collisions

Truck drivers with sleep apnea need treatment to drive safely
While federal regulations do not specifically address sleep apnea, they do state that a person with a condition likely to interfere with their ability to drive safely cannot be medically qualified to operate a commercial motor vehicle. Someone who gets effective, continuing treatment for sleep apnea is permitted to drive under the rules.

Someone who is not compliant with any prescribed sleep apnea treatment is not a safe driver!

Sleep apnea makes drivers drowsy and fatigued
To get and keep a commercial driver’s license, you have to have regular medical examinations. The examiner should be asking about sleep apnea and if diagnosed, whether you are compliant with treatment. Many trucking companies are now requiring new drivers to be tested for sleep apnea, to ensure safe working environments and safe roads.

Source: U.S. Department of Transportation, https://www.fmcsa.dot.gov/driver-safety/sleep-apnea/driving-when-you-have-sleep-apnea.