A. A U-turn is a reversing and turning around so as to go in the opposite direction. No vehicle shall make a U-turn at any of the following street intersections:
5th and E
5th and F
6th and E
6th and F
B. The city may prohibit U-turns at other street intersections by the posting of appropriate signs, visible to affected drivers. When such signs are posted, drivers of vehicles shall obey the same. (1960 Code, Sec. 7-807)