(A)   It shall be the duty of the Police Chief to provide for the enforcement of the street traffic regulations of the town and all of the state vehicle laws applicable to street traffic in the town to make arrests for traffic violations, to investigate accidents and to assist in developing ways and means to improve traffic conditions, and to carry out all duties specially imposed upon the Police Chief by this chapter.
   (B)   Any peace officer of the town may be authorized by the Police Chief to perform any of the duties of the Police Chief included in this title.
(A.R.S. §§ 9-240(B)(3) and (4), 28-627 and 28-643)  (1986 Code, § 14-1-1)