23 C.F.R. § 1235.6 Parking.
Title 23 - Highways
Special license plates, removable windshield placards, or temporary removable windshield placards displaying the International Symbol of Access shall be the only recognized means of identifying vehicles permitted to utilize parking spaces reserved for persons with disabilities which limit or impair the ability to walk.
Title 23: Highways
PART 1235—UNIFORM SYSTEM FOR PARKING FOR PERSONS WITH DISABILITIES
§ 1235.6 Parking.