 Sometimes there is a pan attached to the hole, so the user can pee/poop without having to wheel over the toilet.Adapting the built environment to make it more accessible to wheelchair users is one of the key campaigns of disability rights movements and local equality legislation such the Americans with Disabilities Act of 1990 (ADA).The social model of disability defines 'disability' as the discrimination experienced by people with impairments as a result of the failure of society to provide the adaptions needed for them to participate in society as equals.