This is a mandatory as this discretion was placed solely on the Medical Examiners who certify these drivers are healthy and pose no public risk to drive. Sleep Apnea if left untreated can cause day-time sleepiness that can impair a drivers ability to drive these vehicles. VirtuOx, the nation’s largest provider of Home Sleep Apnea Testing, has recently developed a new product VeriSleep that can guarantee that the person wearing the Home Sleep Testing device is the driver and not the drivers friend or spouse.

Source: http://www.gobytrucknews.com/fmcsa-starts-apnea-rulemaking/123