Sec. 245. 

The function of the Department of Traffic is the study of traffic and related matters including the effect of laws and regulations relating to traffic, securing information upon such subjects and providing information to the various departments and offices of the City concerning traffic accidents, congestion, lighting, and other conditions affecting the safe and convenient use of streets and other public ways for travel.

Except as otherwise provided in this Charter the Department of Traffic shall have authority over the location, installation and maintenance of all signs, signals, parking meters, and other traffic control devices, provided however, that the authority conferred by this section shall not be construed to abridge the power of the Council to order any work or improvement that may affect or involve any of the aforesaid matters.  (Former section repealed, 1947; new section added, 1953.)

The Public Liability Act of 1923 extends to defective and dangerous conditions of traffic control devices.

Bady v. Detwiler, 127 Cal. App. (2d) 321.