23 CFR § 1235.3 - Special license plates.

(a) Upon application of a person with a disability which limits or impairs the ability to walk, each State shall issue special license plates for the vehicle which is registered in the applicant's name. The initial application shall be accompanied by the certification of a licensed physician that the applicant meets the § 1235.2(b) definition of persons with disabilities which limit or impair the ability to walk. The issuance of a special license plate shall not preclude the issuance of a removable windshield placard.

(b) Upon application of an organization, each State shall issue special license plates for the vehicle registered in the applicant's name if the vehicle is primarily used to transport persons with disabilities which limit or impair the ability to walk. The application shall include a certification by the applicant, under criteria to be determined by the State, that the vehicle is primarily used to transport persons with disabilities which limit or impair the ability to walk.

(c) The fee for the issuance of a special license plate shall not exceed the fee charged for a similar license plate for the same class vehicle.