Americans with Disabilities Act (ADA) of 1990 (with amendments issued through 2008)
(ii) Accessibility requirements
For purposes of subsection (a) of this section, discrimination includes
(I) the purchase or lease of an over-the-road bus which does not comply with the regulations issued under section 12186(a)(2) of this title by a private entity which provides transportation of individuals and which is not primarily engaged in the business of transporting people, and
(II) any other failure of such entity to comply with such regulations.