POL Government Elected Officials Auditor Mary Hull Caballero Charter, Code & Policies City Code & Charter Online Code & Charter Title 16 Vehicles and Tra Chapter 16.10 Administrative Provisions
16.10.400 Regulation Standards.

The City Traffic Engineer may erect traffic control devices and impose regulations to control traffic and parking in the City of Portland. The regulations of the City Traffic Engineer or his/her designee will be based on:

A. traffic engineering principles and traffic investigations;

B. standards, limitations, and rules issued by the Oregon Transportation Commission; and

C. other recognized traffic control standards.