A. 
The traffic authority is authorized to place, or cause to have placed, markers, buttons, or signs within or adjacent to intersections indicating the course to be traveled by vehicles turning at such intersections, and the traffic authority is authorized to allocate and indicate more than one lane of traffic from which drivers of vehicles may make right or left turns, and the course to be traveled as so indicated may conform to or be other than as 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 at that intersection, no driver of a vehicle shall disobey the directions of such indications.
(Prior code § 3-5.501)
The traffic authority is authorized to determine those intersections at which drivers of vehicles shall not make a right, left, or U-turn and shall place, or cause to be placed, proper signs at such intersections. The making of such turns may be prohibited between certain hours of any day and permitted at other hours, in which event the same shall be plainly indicated on the signs, and such signs may be removed when such turns are permitted.
(Prior code § 3-5.502)
Whenever authorized signs are erected indicating that no right, left, or U-turn is permitted, no driver of a vehicle shall disobey the directions of any such signs.
(Prior code § 3-5.503)
No driver of a vehicle shall make a right turn against a red or stop signal at any intersection which is signposted giving notice of such restriction. The traffic authority shall post, or cause to be posted, appropriate signs giving effect to this section at any intersection where the traffic authority determines that the making of right turns against a traffic signal stop indication would seriously interfere with the safe and orderly flow of traffic.
(Prior code § 3-5.504)