I have been fighting for mine for 4 mo now I use the VA for my sleep study so it was covered buy them but I still don't have a full yr yet I checked with the DOT and it is legal if you want to check it out go to the DOT web site it will explain it is not a requirement for everyone yet it is up to the DR. I have to get my chip in my cpac read before March they just keep giving me a 3 mo card.