Health & Wellness · Driver Training VideoSleep Apnea & DOT

Obstructive sleep apnea means your airway partly collapses while you sleep. Breathing stops and starts, sometimes hundreds of times a night. You never fully wake up, but you never get real rest either.

Here is the regulation piece

FMCSA's physical qualification standard says a driver cannot have "an established medical history or clinical diagnosis of a respiratory dysfunction likely to interfere with his or her ability to control and drive a commercial motor vehicle safely." There is no single federal rule that names sleep apnea by name or sets one official cutoff number.

If your examiner sees enough of those signals, they can require a sleep study, called a polysomnogram, before they will sign your card. They can also issue you a short certificate — often ninety days or less — while that workup happens, instead of the usual one or two years.

Your company standard: if you're referred for a sleep study, complete it on the timeline your examiner sets. If you're diagnosed and prescribed a CPAP machine, use it every night, not just on nights you remember. Modern CPAP machines record your usage automatically.

Untreated sleep apnea is fixable

Treated apnea does not end your career — plenty of drivers run CPAP every night and keep their CDL for decades. Ignored apnea is what pulls a license, or worse, causes the crash that ends everything. Get checked, use the treatment, and keep the paperwork straight.