10.20.110 Obedience to barriers and signs.

No person, public utility or any department of this city shall erect or place any barrier or sign on any street unless of a type first approved by the traffic engineer. It is unlawful for any person to disobey the instructions of any barrier or sign placed in any street by any public utility or by any department of this city, provided the type of barrier or sign so erected has been first approved by the traffic engineer.