The increased use is due to fare reductions for people with disabilities, as well as accessibility improvements.
Some Washington DC parking meters provide additional time for people with disabilities. DC will enforce that only authorized drivers take advantage of this additional time.
Washington Post - Red top parking meter enforcement begins in March
Air travel is probably one of the safest but most stressful ways to get from place to place. It is even more stressful for those who depend on others to get on and off their flight.
We have all heard horror stories of disabled passengers being rejected, neglected, unattended, or even forgotten. But the courts and some activist organizations are helping to fix these problems...