Modeling, Forecasting and Telemetrics
Highway PlanningIowa's highway network is the backbone of the state transportation system and accounts for the vast majority of investments. The Office of Systems Planning prepares and publishes highway transportation studies and plans to:
- Provide guidance for the expenditure of limited resources for highway improvements.
- Determine sufficiency ratings for the state primary road system.
- Determine improvement needs for the entire public road and street system.
Each year a primary road sufficiency rating is published for all primary highways. Each mile of primary highway is evaluated based on structural adequacy, safety and service. Sufficiency ratings are another of the many tools used in making highway investment decisions.
All roads, streets and highways in Iowa are classified according to a federal functional classification system. This information is kept up to date by the Office of Systems Planning.
2003-2007 Transportation Improvement Program by Iowa in Motion Improvement Category Map Dec. 16, 2002
Traffic ForecastingThe team prepares estimates of future automobile and truck volumes to assist corridor/project location studies conducted by the Office of Project Planning, and design studies conducted by the Office of Design and the Engineering Bureau.
Urban Transportation Planning SupportTeam members provide technical support and assistance to Metropolitan Planning Organizations for the operation of urban travel demand models (Tranplan) and other traffic forecasting activities.
ResearchManagement and guidance is provided for forecasting-related research projects conducted by universities and funded by the Iowa DOT or U.S. DOT.
Interchange JustificationThe team assists transportation center planners, MPOs and others to complete interchange justification studies required for the addition or modification of interchanges on the Interstate System and controlled-access highway routes in Iowa.
Process for New or Revised Interstate Access - Oct. 2009
FHWA Interstate System Access Informational Guide August 2010