A restricted minor's permit issued under § 32-12-12 or a motorcycle restricted minor's permit issued under § 32-12-12.1 does not entitle the minor to operate a motor vehicle in excess of twenty thousand pounds gross vehicle weight. However, the restriction imposed by this section does not apply to the holder of a restricted minor's permit operating a self-propelled agricultural machine that is not subject to registration under chapter 32-5.
SDCL 32-12-13