Ala. Code § 32-5-12

Handicapped or paraplegic drivers of motor vehicles are authorized when getting into and out of such vehicles, or when in motor vehicle distress, to display a white flag of approximately seven and one-half inches in width and 13 inches in length, with the letter “H” thereon in red color with an irregular one-half inch red border. The flag shall be of reflective material so as to be readily discernible under darkened conditions and shall be issued under Section 32-5-13.