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 under the traffic ordinances and resolutions of this city to make effective the provisions of such ordinances and resolutions. In addition, the city traffic engineer shall have the authority to place and maintain those official devices specified in the traffic control regulations document, according to the latest standards or guidelines established by CalTrans.
(Prior code § 3-1.18; Ord. 2524-95 § 1)
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.
(Prior code § 3-1.19)
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 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 the traffic ordinance of this city or as may be determined by ordinance or resolution of the legislative body of this city.
(Prior code 3-1.20)
No provisions of the Vehicle Code or of this title for which signs are required shall be enforced against an alleged violator unless appropriate signs are in place and sufficiently legible to be seen by an ordinarily observant person, giving notice of such provisions of the traffic laws.
(Prior code § 3-1.21)
The driver of any vehicle shall obey the instructions of any official traffic control device applicable thereto placed in accordance with the traffic ordinance of this city unless otherwise directed by a public safety officer subject to the exceptions granted the driver of an authorized emergency vehicle when responding to emergency calls.
(Prior code § 3-1.22)
The city traffic engineer is directed to install and maintain official traffic signals at those intersections and other places designated by the city council.
(Prior code § 3-1.23; Ord. 2524-95 § 1)
Wherever the city traffic engineer installs and maintains an official traffic signal at any intersection, he or she shall likewise erect and maintain at such intersection street name signs visible to the principal flow of traffic unless such street name signs have previously been placed and are maintained at any said intersection.
(Prior code § 3-1.25)
The city traffic engineer is authorized to place and maintain distinctive roadway markings and centerlines 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. The city traffic engineer may also decide where to place and maintain lane lines and markings to indicate the course to be traveled by vehicles. Such marking or signs and marking shall have the same effect as similar markings placed by CalTrans pursuant to provisions of the Vehicle Code.
(Prior code § 3-1.27; Ord. 2524-95 § 1)
The city traffic engineer is authorized to remove, relocate or discontinue the operation of any traffic control device not specifically required by state law or this title whenever he or she shall determine in any particular case that the conditions which warranted or required the installation no longer exist or obtain.
(Prior code § 3-1.28)
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 § 3-1.29)
The city traffic engineer 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 the city traffic engineer is authorized to allocate and indicate more than one lane of traffic from which drivers of vehicles may make right or left-hand turns, and the course to be traveled as so indicated may conform to or be other than as prescribed by law or ordinance.
(Prior code § 3-1.30)
When authorized markers, buttons, or other indications are placed within an intersection indicating the course to be traveled by vehicles turning thereat, no driver of a vehicle shall disobey the directions of such indications.
(Prior code § 3-1.31)
The city traffic engineer is authorized to determine those intersections at which drivers of vehicles shall not make a right, left, or U-turn, and shall place 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 or they may be removed when such turns are permitted.
(Prior code § 3-1.32)
The city traffic engineer is authorized to determine those intersections within any business or residence district at which drivers of vehicles shall not make a right turn against a red or stop signal and shall erect proper signs giving notice of such prohibition. No driver of a vehicle shall disobey the directions of any such sign.
(Prior code § 3-1.34)
Whenever any ordinance or resolution of this city designates any one-way street or alley, the city traffic engineer shall place and maintain signs giving notice thereof, and no such regulations shall be effective unless such signs are in place. Signs indicating the direction of lawful traffic movement shall be placed at every intersection where movement of traffic in the opposite direction is prohibited.
(Prior code § 3-1.35)
Whenever the city traffic engineer shall designate any intersection where three or more approaches to that intersection are required to stop, the city traffic engineer shall erect and maintain such designated stop signs.
(Prior code § 3-1.36; Ord. 2524-95 § 1; Ord. 3112-17 § 2)
(a) 
The city traffic engineer shall have the power to designate, erect and maintain stop signs on two or fewer approaches to an intersection. Such designations shall be incorporated in the traffic control regulations document.
(b) 
The city traffic engineer shall have the power to designate, erect and maintain stop signs at railroad grade crossings. Such designations shall be incorporated in the traffic control regulations document.
(c) 
Appeals of the city traffic engineer's decision may be made as described in Chapter 10.04.
(Prior code § 3-1.37; Ord. 2524-95 § 1)
The city traffic engineer shall have the power to designate, erect and maintain yield signs on two or fewer approaches to an intersection. Such designations shall be incorporated in the traffic control regulations document. Appeals to the city traffic engineer's decision may be made as described in Chapter 10.04.
(Prior code § 3-1.38; Ord. 2524-95 § 1)