A. 
The City Traffic Engineer shall have the power and duty to place and maintain or cause to be placed and maintained official traffic-control devices when and as required to make effective the provisions of this title.
B. 
Whenever the Vehicle Code requires for the effectiveness of any provision thereof that traffic-control devices be installed to give notice to the public of the application of such law, the City Traffic Engineer is authorized to install or cause to be installed the necessary devices subject to any limitations or restrictions set forth in the law applicable thereto.
C. 
The City Traffic Engineer may also place and maintain or cause to be placed and maintained such additional traffic-control devices as he or she may deem necessary or proper to regulate traffic or to guide or warn traffic, but he or she shall make such determination only upon the basis of traffic engineering principles and traffic investigations, and in accordance with such standards, limitations, and rules as may be set forth in this title or as may be determined by ordinance or resolution of the Council.
(Prior code § 13.18)
A. 
The City Traffic Engineer is authorized to install and maintain official traffic signals at those intersections and other places where traffic conditions are such as to require that the flow of traffic be alternately interrupted and released in order to prevent or relieve traffic congestion or to protect life or property from exceptional hazard.
B. 
The City Traffic Engineer shall ascertain and determine the locations where such signals are required by field investigation, traffic counts and other traffic information as may be pertinent, and his or her determinations therefrom shall be made in accordance with those traffic engineering and safety standards and instructions set forth in the manuals issued by the Division of Highways of the state Department of Public Works.
(Prior code § 13.21)
The City Traffic Engineer shall determine the hours and days during which any traffic-control device shall be in operation or be in effect, except in those cases where such hours or days are specified in this title.
(Prior code § 13.25)
No provision of the Vehicle Code or of this title for which signs are required shall be enforced against an alleged violator unless appropriate legible signs are in place giving notice of such provisions of the traffic laws.
(Prior code § 13.19)
The City Traffic Engineer is authorized to mark centerlines and lane lines upon the surface of the roadway to indicate the course to be traveled by vehicles and may place signs temporarily designating lanes to be used by traffic moving in a particular direction, regardless of the centerline of the highway.
(Prior code § 13.22)
The City Traffic Engineer is authorized to place and maintain distinctive roadway markings as described in the Vehicle Code on those streets or parts of streets where the volume of traffic or the vertical or other curvature of the roadway renders it hazardous to drive on the left side of such marking or signs and markings. Such marking or signs and markings shall have the same effect as similar markings placed by the state Department of Public Works pursuant to provisions of the Vehicle Code.
(Prior code § 13.23)
A. 
It is unlawful for any person driving, or operating, propelling or causing to be propelled, any vehicle to fail, refuse or neglect to stop within fifty feet prior to the nearest side of a school crosswalk or pedestrian lane where any signal device, police officer or any other authorized person is stationed giving warning that children are about to cross or are crossing the street; and it is further declared unlawful to start such vehicle into motion until such signal has stopped, raised, been removed or given an indication to proceed, or the police officer or other authorized person has given a signal to proceed or has left the locality.
B. 
The signals referred to in this section and known hereafter as "school signals" shall be of the type as follows:
A yellow intermittent light shall be displayed during those hours in any one day as deemed necessary for the safety and welfare of school children, and shall be an indication to the operator of a vehicle of a school crosswalk, and a further indication to the operator of a vehicle to proceed with caution. The "school signal" shall display a constant yellow light upon being actuated by a remote control operated by a pedestrian, and shall be an indication to the operator of a vehicle that the constant red light alone is about to be displayed and shall be further indication to the operator of a vehicle that a complete stop within fifty feet prior to the crosswalk or pedestrian lane contiguous to the signal will be required. A constant red light shall be displayed immediately after the display of the constant yellow light by the "school signal," which shall be an indication to the operator of a vehicle that a complete stop is required and the vehicle shall not be placed into motion prior to the "school signal" resuming the operation of an intermittent yellow light, which shall indicate to proceed with caution.
(Prior code § 13.27)
No person, unless authorized by this City, shall paint any street or curb surface; provided, however, that this section shall not apply to the painting of numbers on a curb surface by any person who has complied with the provisions of any resolution or ordinance of this City pertaining thereto.
(Prior code § 13.26)
The City Traffic Engineer is authorized to remove, relocate or discontinue the operation of any traffic-control device not specifically required by the Vehicle Code or this title whenever he or she determines in any particular case that the conditions which warranted or required the installation no longer exist or obtain.
(Prior code § 13.24)