Okla. Stat. tit. 47, § 6-122
The Department of Public Safety shall develop procedures whereby driver licenses issued under the provisions of Section 6-101 et seq. of this title may be renewed by mail except for licenses to be renewed by aliens as prescribed by subsection D of Section 6-115 of this title. Any license issued pursuant to this section shall be valid for a period of not more than four (4) years.
Laws 1975, HB 1060, c. 359, § 3, eff. January 1, 1977; Amended by Laws 1992, HB 2431, c. 217, § 8, emerg. eff. July 1, 1992; Amended by Laws 2003, SB 704, c. 392, § 11, emerg. eff. July 1, 2003 (superseded document available).