The Council shall, by resolution, determine and designate the character or type of all official traffic signs and signals, provided that all official traffic signs and signals now erected and now in operation are hereby designated official traffic signs and signals and provided further, the signs and signals shall be uniform, so far as practicable, with the state highway signs and signals and shall be uniform, so far as practicable, throughout the city.
(1975 Code, § 23-19)