(a) 
The city engineer shall have the power and duty to place and maintain or cause to be placed and maintained official traffic-control devices, signs and markings when and as required to make effective the provisions of this title. He or she shall also install and maintain traffic signals as directed by the council.
(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 engineer is hereby 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 engineer may also place and maintain, or cause to be placed and maintained, such additional trafficcontrol devices, signs and markings 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. He or she shall be custodian of all records regarding trafficcontrol, including special surveys.
(Ord. 1136 § 3, (1978))
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.
(Ord. 1136 § 3, (1978))
The operator of any vehicle shall obey authorized signs, markings and traffic-control devices placed in accordance with this title unless otherwise directed by a police officer or other authorized person subject to the exceptions granted the operator of an authorized emergency vehicle when responding to emergency calls.
(Ord. 1136 § 3, (1978))
The city 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.
(Ord. 1136 § 3, (1978))
No person, unless authorized by this city, shall paint any street or curb surface.
(Ord. 1136 § 3, (1978))