C.R.S. § 42-2-139

(1) No parent or guardian shall cause or knowingly permit his or her child or ward under the age of eighteen years to drive a motor vehicle upon any highway when such minor has not been issued a currently valid minor driver’s license or instruction permit or shall cause or knowingly permit such child or ward to drive a motor vehicle upon any highway in violation of the conditions, limitations, or restrictions contained in a license or permit which has been issued to such child or ward. (2) Any person who violates any provision of this section commits a class B traffic infraction.