A. 
Whenever the Director finds and determines that in order to facilitate the movement of traffic at any intersection that vehicles should take a different course than that specified in Section 22100 of the State Vehicle Code, or that right- or left-hand turns should be made from more than one lane, or that vehicles in certain lanes should be required to turn left or right, the Director shall place at such an intersection signs or markers so indicating, pursuant to Section 22101 of the State Vehicle Code.
B. 
In those intersections where the Director has placed signs or markers requiring right- or left-hand turns, no driver shall drive a vehicle other than as directed and required or permitted by such markers, or signs.
(Ord. 89-12, 6/27/1989)
At locations where channelization devices have been placed and the Director finds that it is necessary to prohibit left turns or right turns for the purpose of diminishing traffic complications, the Director shall place appropriate signs prohibiting such left or right turns.
(Ord. 89-12, 6/27/1989)
At all other locations at which the Council has determined and found that the elimination of left turns or right turns is necessary to reduce traffic congestion, the Director shall place appropriate signs prohibiting such left or right turns.
(Ord. 89-12, 6/27/1989)
When appropriate signs have been erected pursuant to Section 21453 of the Vehicle Code, the driver of a vehicle which is stopped in obedience to a red "STOP" signal shall not make a right turn against such red "STOP" signal at any approach to any intersection which the Council has determined that such turns at such location would interfere with the safe and orderly movement of traffic.
(Ord. 89-12, 6/27/1989)
If the Council finds that the volume of traffic, the width of the highway, and other traffic conditions at any intersection are such that the making of a U-turn at such intersection would create traffic complications, the Director shall erect and maintain in a conspicuous place or places at such intersection an adequate sign or signs stating that such U-turns are prohibited.
(Ord. 89-12, 6/27/1989)