This is just insane. What is wrong with 'handicap parking'? 'Accessible parking' is objectively less descriptive. Its only accessible for the handicapped!
This is the perfect example of the euphemism treadmill. We started with terms like 'invalid' and 'cripple'. But over time, these labels are perceived negatively. So we move to 'handicap'. And now 'handicap' is offensive, so we come up with a new label. As if agonizing over what to label handicapped people makes their condition any better.