The Division of Service shall be charged with the duty of:
(a) Cleaning, repairing, maintaining and lighting of all streets, highways and sidewalks throughout the City;
(b) Cleaning, repairing, maintaining and inspecting of all sewers, drains, ditches, culverts and watercourses throughout the City;
(c) Collection and disposal of garbage, refuse, waste paper, ashes and rubbish;
(d) Operation of the City garage; and
(e) Maintaining and installing of traffic signs and signals.