A driver diagnosed with mild obstructive sleep apnea who is undergoing treatment should be certified for?

A driver diagnosed with mild obstructive sleep apnea who is under treatment and demonstrates compliance with their treatment plan, such as regular use of a CPAP device, can be certified for a full year. The Federal Motor Carrier Safety Administration (FMCSA) guidelines provide that commercial drivers with mild obstructive sleep apnea can be issued a Medical Examiner's Certificate for up to 12 months if they are effectively managing their condition.

This certification duration reflects the understanding that as long as the individual's condition is stable, they can safely operate a commercial vehicle. Drivers should also be monitored for any potential changes in their condition that could affect their driving ability. While longer certification periods can generally be granted under these circumstances, shorter terms, such as those indicated in the other options, are typically reserved for more severe cases or when treatment compliance is uncertain.