The Center for Weather Impacts on Mobility and Safety is an Iowa State University Center administered by the Institute for Transportation.

Center for Weather Impacts on Mobility and Safety

Research Projects

CWIMS/InTrans (26)

Iowa State University Department of Geological and Atmospheric Sciences (7)

  • 2004, Bridge Frost Occurrence and Prediction, Spokane, WA
  • 2003, Applications of a Roadway Frost Prediction System in Iowa, 19th International Conference on Interactive Information Processing Systems (IIPS) for Meteorology, Oceanography, and Hydrology, Amer. Meteor. Soc., Long Beach
  • 2003, Evaluation of a Frost Accumulation Model, Meteor. Appl. 10, 337-343
  • 2002, Conceptual and Scaling Evaluation of Vehicle Traffic Thermal Effect on Road Snow/ice, J. Appl. Meteor., 41, 1225-1240
  • The Iowa Environmental Mesonet Combining Observing Systems into a Single Network, Sixth Symposium on Integrated Observing Systems, Amer. Meteor. Soc., Orlando, FL
  • 2001, A Model for Forecasting Frost Accumulation on Bridges that Uses Roadway Weather Information System (RWIS) Data, 17th International Conference on Interactive Information and Processing Systems (IIPS), Amer. Meteorol. Soc., Albuquerque, NM
  • 2001, A Winter Weather Index to Estimate Maintenance Costs in the Midwest, 17th International Conference on Interactive Information and Processing Systems (IIPS), Amer. Meteorol. Soc., Albuquerque, NM

Technology Transfer

Iowa State University's National Concrete Pavement Technology (CP Tech) Center has developed and is currently developing several publications about PCC construction which include information about weather-related complications.

  • Concrete Paving Notes (available from the American Concrete Paving Association)
    • Materials No. 1: Formation and Characteristics of Concrete Mixtures for Pavements: The Basics (product code: SP486P)
  • Concrete paving workforce references
    • No. 1. Concrete Materials Storage, Mixing, and Delivery
    • No. 2. Concrete Paving Site Preparation and Construction
    • No. 3. Concrete Paving Joint Sawing, Cleaning, and Sealing

Resources and Laboratories

Related Programs


InTrans administers the Aurora program, an international pooled-fund partnership for research in road weather information systems. See "Go Light with the Salt, Please: Developing Information Systems for Winter Roadway Safety" in the January–February 2004 edition of TR News (pdf) for an article about Aurora.

Iowa Environmental Mesonet

The Iowa Environmental Mesonet (IEM) was established and maintained as a partnership between Iowa State University, the Iowa Department of Transportation, the National Weather Service, and KCCI, the CBS affiliate television station in Des Moines, Iowa. (The IEM won a national award for being a public-private-university partnership.) The IEM displays a variety of raw and derived products using RWIS data. The Iowa DOT has played a central role in the RWIS data collection.

Weather Issues in Transportation

Led by the Iowa DOT, a diverse group of researchers is developing a regional, multi-disciplinary approach to establishing a weather-related research and technology transfer program. Read more about it on the Weather Issues in Transportation website.


For more information about