Handicap Reserved Parking Spaces

I shut down at the TA in Jessup Maryland last night and while I was heading over to get my parking receipt I noticed that there are three Handicap reserved parking spaces for Big Rigs near the maintenance shop. That got me thinking. Most disabilities disqualify a person who is trying to obtain a commercial drivers license. Are there certain disabilities that do not disqualify or can be waived? Who determines what would be acceptable and what is not. I'm assuming the Feds and the States determine this... but in this political climate we are currently in some states pick and choose what federal law they will follow. So if the Feds determine that disabilitie X disqualifies a person from obtaining a commercial drivers license theoretically a State could ignore Federal law and grant a state CDL to that person with that disqualifying disabilitie. These are things I think about when I'm at the shipper getting loaded.

Check out this previous thread about Handicap truck spots.

There are a few disabilities that can get waivers, such as amputees. There may be drivers that have their spouse/partner (non-driver) that go out with them that have a handicap permit. I had my girlfriend ride with me for a week or so at a time, and she has a handicap permit for her MS. When she would come with me, she would bring her permit with her, and one of the TA's I stopped at has a few handicap spots near the building, and they did not charge for it, but not all truck stops handicap spots are free, but most are.

I qualify for one: heart transplant or rheumatoid arthritis. Take your pick.