All provisions of this chapter and ordinances or parts of ordinances, with reference to traffic requirements such as prohibiting parking, right turns, left turns, “U” turns, or any other regulations which require notice, signs or markers of some description, cannot be, nor will they be enforced, unless there is a sign, notice or marker, as mentioned above, placed or displayed in such place, which should give notice to a careful and prudent driver.
('70 Code, § 23-16) (Ord. 1972-18, passed 3-15-72)