Skip to Main Content View Text-Only

The City of Portland, Oregon

Charter, Code and Policies

City of Portland



More Contact Info

17.107.010 Purpose.

(Amended by Ordinance No. 188957, effective June 23, 2018.)  The purpose of this Chapter is to describe the required elements of a Transportation and Parking Demand Management (TDM) Plan, and the circumstances under which a pre-approved TDM plan may be submitted.  Requiring TDM is intended to prevent, reduce, and mitigate the impacts of development on the transportation system, neighborhood livability, safety, and the environment while reducing transportation system costs.

TDM plans provide residents, employees, and visitors with information and incentives to use transportation methods other than single occupancy vehicles in order to achieve the City’s transportation goals, including reduced reliance on single occupancy vehicles, and reduced vehicle miles travelled.