A. Compliance Required: All drivers of motor vehicles and all pedestrians shall obey the instructions of every traffic sign, signal, marker, barrier or parking meter placed in accordance with the motor vehicle laws of Oregon or this title, including those erected by any authorized public utility and department of the city or other authorized person, except when necessary to avoid conflict with other traffic or when otherwise directed by a police officer.
B. Tampering With Signs Or Signals: No unauthorized person shall move, remove or alter the position of, or deface or tamper with any such sign, signal, marker, barrier or parking meter. (1962 Code § 9-2-1)