It shall be considered discrimination for purposes of section
12132 of this title and section
794 of title
29 for a person who provides intercity rail transportation to fail to have at least one passenger car per train that is readily accessible to and usable by individuals with disabilities, including individuals who use wheelchairs, in accordance with regulations issued under section
12164 of this title, as soon as practicable, but in no event later than 5 years after July 26, 1990.