A Regional Transportation Planning Organization (RTPO) is a voluntary association of local governments within a county, or within geographically contiguous counties. An RTPO is required to prepare a regional transportation plan (Plan), among other duties. An RTPO can cover both urban and rural areas and receives state funding in support of its planning efforts. There are currently 16 RTPOs, which cover 38 of Washington's 39 counties.
The RTPOs must prepare and update a Plan, in cooperation with the Washington State Department of Transportation, transportation providers, local governments, and other specified entities. In addition to satisfying other requirements, the Plan must:
The Plan must also set forth a proposed regional transportation approach, including capital investments, service improvements, programs, and transportation demand management measures to guide the development of an integrated, multimodal regional transportation system. All transportation projects, programs, and demand management measures within the region must be consistent with the Plan and adopted regional growth and transportation strategies.
The Plans of certain regional transportation planning organizations (RTPOs) are required to provide for reductions in greenhouse gas emissions and vehicle miles traveled. The requirement applies to RTPOs that contain a county or counties meeting one or more of the following criteria:
The requirement currently applies to Benton, Clark, King, Kitsap, Pierce, Snohomish, Spokane, Skagit, Thurston, Whatcom, and potentially Franklin counties.