The National Transportation Safety Board is requiring medical checkups to include examination for Sleep Apnea.  This will eventually include those that operate Trains as well as heavy trucks.

Note that snoring is a preliminary sign of breathing problems but does not mean you have Sleep Apnea.  I have soldiers who are going for their tour of duty being checked for Sleep Apnea.  CPAP is the traditional treatment but Sleep Appliances also an approved treatment and free you from a machine.

Dr. Lowrance