11.20.030 OBEDIENCE REQUIRED.

(a) The driver of a vehicle, the person in charge of animals and the motorman of a streetcar, shall obey the instructions of any official traffic control device applicable thereto placed in accordance with this title unless otherwise directed by a police officer, subject to the exemption granted by Section 11.04.050.

(b) The driver of a vehicle, the person in charge of an animal, and the motorman of a streetcar, shall obey the instructions on any barrier or sign erected by any of the public departments of city or public utilities in city, or by any other person, pursuant to law.