This code is in all respects subordinate to the laws of the state, except to the extent that any law expressly makes a provision of this code superior; and except in the case, if any provision of this code is found to be prohibited by or in conflict with a provision of any state statute, whether the statute was enacted prior or subsequent to the enactment of the prohibited or conflicting code provision, then the provision of the statute shall prevail. However, nothing in this section shall be construed to prevent the City Council from enacting any provision which is collateral or supplementary to a statute, and any such provision shall be invalid only if and to the extent that it is overtly inconsistent with a prescriptive or proscriptive provision of the statute; preempts the actual field of operation of a statute; impairs or denies a right, privilege, or power conferred on any person by a statute; prevents or impairs any person from performing a duty or other act required to be performed by a statute; or contravenes the purpose for which a statute was enacted by the General Assembly; but, provided further, that no collateral or supplementary provision shall fix or apply a penalty of fine or other forfeiture for any act or condition which is also a penal violation of any statute.
(1985 Code, § 1-2-8)