Americans with Disabilities Act (ADA) of 1990 (with amendments issued through 2008)

(B) Accessibility

For purposes of section 12132 of this title and section 794 of title 29, a requirement that a rail passenger car used in commuter rail transportation be accessible to or readily accessible to and usable by individuals with disabilities, including individuals who use wheelchairs, shall not be construed to require

(i) a restroom usable by an individual who uses a wheelchair if no restroom is provided in such car for any passenger;

(ii) space to fold and store a wheelchair; or

(iii) a seat to which a passenger who uses a wheelchair can transfer.