The following regulations concerning uniforms shall be observed at all times:
(A) Officers and members of the Police Department shall maintain a clean and serviceable uniform at all times on duty. No uniform will be worn until it conforms to the specifications prescribed by the Board of Commissioners. The uniform shall be worn securely buttoned at all times.
(B) Officers and members of the Department shall never wear, use, display, or have in their possession a police shield or similar objects except as authorized by the Chief of Police. They shall at all times carry their shields and when in uniform display it on the outermost garment over the left breast.
(C) Officers and members of the Department are personally responsible for the proper and authorized use of their uniforms and equipment.
(D) Parts of the police uniform will not be worn on the street in conjunction with civilian clothes.
(E) Officers and members of the Department will be required to have a copy of the rules and regulations of the Department and a memorandum or citation book at all times.
('70 Code, Ch. B, Art. VI § l)