a. 
Every person riding a bicycle, or riding or driving an animal upon a highway shall be granted all of the rights and shall be subject to all of the duties applicable to the driver of a vehicle by this title, except those provisions which by their very nature can have no application.
b. 
Notwithstanding the provisions of subdivision (a) of this section, any person may ride a bicycle on a sidewalk which is designated by the Director as a part of the County bike route system and which is identified for such use by appropriate signs giving notice thereof. A bicyclist using a sidewalk as authorized by this subdivision shall yield the right-of-way to any pedestrian using the sidewalk.
(Ord. 703 § 31, 1960; SCC 139 § 1, 1973)
No persons other than traffic officers or persons authorized by law, shall direct traffic by voice, hand/or other signal, except that a person may operate, when and/or as herein provided, a pushbutton signal erected by the provisions of this title.
(Ord. 703 § 31, 1960)
A person designated as a flagger by a contractor working on the County streets under a permit issued by the County or a County employee designated as a flagger by the Director or representative, during construction or repair of, or in, streets, may direct traffic by use of hand signals or warning flags if the operation of special highway construction equipment, trucks, concrete mixers, mobile cranes or other construction equipment might interfere with the safe movement of traffic.
(Ord. 703 § 32, 1960)
The provisions of this title, regulating the parking and standing of vehicles shall not apply to any vehicle of the Sheriff's Office or Fire Departments, any public or private ambulance or any public utility vehicle which is qualified as an authorized emergency vehicle, when such vehicle mentioned in this section operates in the manner specified in the Vehicle Code in response to emergency calls. The provisions of this title regulating parking or standing vehicles shall not apply to any vehicle belonging to the government or a public utility or its agent while necessarily in use on construction or repair work on or in the public right-of-way. The foregoing exemption shall not, however, protect the driver of any such vehicle from the consequences of his willful disregard of safety of others.
(Ord. 703 § 33, 1960)
The provisions of this title where signs giving notice of the provision are required shall not be effective until such signs are actually placed by the Director.
(Ord. 703 § 34, 1960)
Every person driving a vehicle and every pedestrian shall comply with and obey any indication as set forth in the Vehicle Code presented by any official traffic control device, upon any highway placed under the authority of this title.
(Ord. 703 § 35, 1960)