(A) It shall be the duty of the officers of the Grant County Sheriff's office or any officers as are assigned by the Sheriff to enforce all street traffic laws of this city and all of the state vehicle laws applicable to street traffic in this city.
(B) Officers of the Grant County Sheriff's office or any officers as are assigned by the Sheriff are authorized to direct all traffic by voice, hand, or signal in conformance with traffic laws, provided that, in the event of a fire or other emergency or to expedite traffic or to safeguard pedestrians, officers of the Grant County Sheriff's office may direct traffic as conditions may require notwithstanding the provisions of the traffic laws.
(C) Personnel of the Fire Department, when at the scene of a fire, may direct or assist the Grant County Sheriff's office in directing traffic thereat or in the immediate vicinity.