SRTC is the Metropolitan Planning Organization (MPO) for Spokane County. Federal law requires urbanized areas with a population over 50,000 to have an MPO to ensure transportation expenditures are based on a
continuing, cooperative and comprehensive planning process. Federal and State funds for transportation projects and programs are channeled through this process and awarded to local jurisdictions dealing with transportation.

MPOs and RTPOs are directed by a board of elected officials, and maintain a staff of transportation Staff members work to collect transportation data, project the need for infrastructure, and prioritize projects based on available funding. SRTC encourages coordination and collaboration between planning and transportation departments at our partner agencies, including the City of Spokane, Spokane Valley, Spokane County, the Washington State Department of Transportation, Spokane Transit, and small cities and towns in order to assure connectivity throughout Spokane County.

SRTC's service area is all of Spokane County.  Services SRTC offers include census information and analysis, air quality conformity and analysis, historical traffic count data analysis, transportation concurrency review or analysis, geographic information services such as mapmaking and demographic analysis, transportation analysis zone data, and travel demand forecasting. 

In addition, SRTC does special studies to remedy specific transportation issues, promote changes in the community, plan for transit services for the disabled and transportation disadvantaged or other tasks as directed by the SRTC board.