A. It is unlawful for any person to wilfully fail or refuse to comply with any lawful order or direction of any officer of the sheriff's department or other special officer assigned to traffic duty and vested by law with authority to direct, control or regulate traffic.
B. An officer of the sheriff's department shall direct all traffic in accordance with the provisions of this title, or in emergencies, as public safety or convenience may require. Except in case of an emergency, it is unlawful for any person not authorized by law to direct or attempt to direct traffic. (1999 Code)