A. No driver of any vehicle shall disobey the instructions of any traffic sign, signal, marker, barrier, or parking meter placed in accordance with the motor vehicle laws of Oregon or this code, including those erected by any authorized public utility, department of the city, or other authorized person, unless it is necessary to avoid conflict with other traffic or when otherwise directed by a police officer.

B. No unauthorized person shall move, remove, deface, tamper with, or alter the position of any such sign, signal, marker, barrier, or parking meter. (Prior code § 6.030)