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

(2) Rapid rail and light rail key stations

(A) Accessibility

Except as otherwise provided in this paragraph, all key stations (as determined under criteria established by the Secretary by regulation] in rapid rail and light rail systems shall be made readily accessible to and usable by individuals with disabilities, including individuals who use wheelchairs, as soon as practicable but in no event later than the last day of the 3-year period beginning on July 26, 1990.

(B) Extension for extraordinarily expensive structural changes

The Secretary may extend the 3-year period under subparagraph (A) up to a 30-year period for key stations in a rapid rail or light rail system which stations need extraordinarily expensive structural changes to, or replacement of, existing facilities; except that by the last day of the 20th year following July 26, 1990, at least 2/3 of such key stations must be readily accessible to and usable by individuals with disabilities.