Tennessee Code Title 55. Motor and Other Vehicles § 55-21-102

(3)(A) “Disabled driver” is one who is disabled by paraplegia, amputation of leg, foot or both hands, or is disabled by loss of use of a leg, foot or both hands, or other condition, certified to by a physician duly licensed to practice medicine, resulting in an equal degree of disability (specifying the particular condition) so as not to be able to get about without great difficulty, including impairments that, regardless of cause or manifestation, confine the person to a wheelchair or cause the person to be so ambulatorily disabled that the person cannot walk two hundred feet (200') without stopping to rest and includes, but is not limited to, those persons using braces or crutches, arthritics, spastics and those with pulmonary or cardiac ills who may be semiambulatory;

(B) “Disabled driver” also includes the owner of a motor vehicle with vision of not less than 20/200 with correcting glasses in both functioning eyes;

(C) “Disabled driver” also includes the owner of a motor vehicle who is so ambulatorily disabled that the person cannot walk two hundred feet (200') without stopping to rest and who is seeking treatment and/or healing solely by prayer through spiritual means in the practice of religion in accordance with the creeds or tenets of the First Church of Christ, Scientist in Boston, Massachusetts. The condition shall be certified by a Christian Science practitioner listed in The Christian Science Journal as resulting in a degree of disability so that the person is not able to get about without great difficulty;