Products, Services, and Data

Models and Other Technical Tools

COMPASS uses computer modeling and other technical tools to examine the current and future state of our region – from transportation to air quality to land use, and more. These tools, and the data they provide, support COMPASS member agencies as well as COMPASS’ own planning efforts.

COMPASS computer models and related technical tools include:

  • CommunityViz
    • CommunityViz® is a software tool used for scenario planning and similar applications. It works as an extension to Esri’s ArcGIS® geographic information systems (GIS) software and combines computerized maps and graphics with analysis capabilities to allow users to sketch future land use scenarios for a specific geographic area and view what impacts they will have on economic development, transportation, housing, agriculture, and other topics of interest. COMPASS used CommuntiyViz to develop the projected future land use and demographics for Ada and Canyon County for Communities in Motion 2040. These demographics are one of the most important inputs into the regional travel demand model.
  • Regional Travel Demand Forecast Model
    • The regional travel demand forecast model estimates and forecasts average weekday and peak hour demand for the transportation system in the Treasure Valley. The model assigns vehicle trips to roadways represented in the model; forecasts ridership demand for the ValleyRide bus system (also represented in the model), and walk and bike trips. The model can inform transportation planning processes by showing where congestion may occur in the future, travel time on key corridors, and the effects of land use decisions on the overall system. The model outputs are used to evaluate and help plan future transportation projects, support the Ada County Highway District's Capital Improvement Plan, conduct air quality conformity demonstrations, provide analysis on the potential impacts of proposed developments, and respond to various member requests such as performing a cost/benefit analysis for particular transportation investments.
  • Transportation Economic Development Impact System (TREDIS)
    • TREDIS is a suite of tools that assesses economic impacts, benefits, and costs of transportation policies, plans, and projects from alternative perspectives. It is used by COMPASS to help prioritize transportation projects for the long-range transportation plan and to provide data, such as cost/benefit analyses, in support of grant applications for individual projects. Project cost and trip-related information from the regional travel demand model are necessary inputs into TREDIS. Simply put, TREDIS helps answer the question of “what do we get out of investing – or not investing – in a particular project?”

For additional information contact MaryAnn Waldinger, 208/475-2242, or Carl Miller, 208/475-2239.