(a) 
The chief of police is authorized to place markers, buttons or signs within or adjacent to intersections indicating the course to be traveled by vehicles turning at such intersections, and such course to be traveled as so indicated may conform to or be other than prescribed by law or ordinance.
(b) 
When authorized markers, buttons or other indications are placed within an intersection indicating the course to be traveled by vehicles turning thereat, no driver shall disobey the directions of such indications.
[Code 1984, ch. 10, § 11(B)]
The chief of police is hereby authorized to determine those intersections at which drivers of vehicles shall not make a right turn, left turn or U-turn, and shall place proper signs at such intersection.
[Code 1984, ch. 10, § 11(C)]
Whenever authorized signs are erected indicating that no turn, no right turn, left or U-turn is permitted, no driver of a vehicle shall disobey the directions of any sign.
[Code 1984, ch. 10, § 11(D)]
(a) 
The driver of a vehicle shall not turn such vehicle so as to proceed in the opposite direction upon any street except at an intersection, and the driver of a vehicle shall not turn such vehicle as to proceed in the opposite direction unless such movement can be made safely and without interfering with such other traffic.
(b) 
The driver of a vehicle shall not turn such vehicle so as to proceed in the opposite direction upon any street in a business district or upon any through street which has been designated and signposted as such.
[Code 1984, ch. 10, § 11(E)]