No person, public utility or department in the city shall erect or place any barrier or sign on any street unless of a type approved by the city traffic engineer, or disobey the instructions, remove, tamper with or destroy any barrier or sign lawfully placed on any street by any person, public utility or by any department of the city.
No person shall operate a vehicle contrary to the directions or provisions of any barrier or sign erected:
A. Pursuant to the provisions of any ordinance of the city;
C. By any department of the city;
D. By any other person pursuant to law or contract with the city;
Nor shall any authorized person move or alter the position of any such barrier or sign.
(Prior code § 17-12)