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Overview of Weather Related R&D

Center for Weather Impacts on Mobility and Safety (C-WIMS)/Center for Transportation Research and Education (CTRE). Overview of Weather Related R&D. Historically. Partnership with Iowa DOT Progressive winter maintenance program Concept Vehicle Weatherview Iowa MDSS evaluation

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Overview of Weather Related R&D

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  1. Center for Weather Impacts on Mobility and Safety (C-WIMS)/Center for Transportation Research and Education (CTRE) Overview of Weather Related R&D

  2. Historically • Partnership with Iowa DOT • Progressive winter maintenance program • Concept Vehicle • Weatherview • Iowa MDSS evaluation • Early weather impacts safety and mobility studies • Aurora Program Management

  3. Following the AMS and BASC Reports • June, 2004 Iowa held a Weather Issues in Transportation meeting (Iowa DOT-FHWA-CTRE) • Over 100 representatives from throughout north America • Transportation professionals • Technology provider • Enforcement • DOT maintenance field staff • FHWA • Traffic operators • Private carriers

  4. Work Shop Recommendation • Identified and ranked 25 research project/programs • Called for the creation of a center to provide leadership for Midwest transportation weather research Issues • Reduction in safety and mobility impacts of weather • Provide leadership in the development of research agendas • Support a forum for unmet, high priority needs • Raise financial resources • Work with other universities to develop a competitive research program

  5. Early projects • Traffic Demand – Traffic Safety – Traffic Flow Relationships • Travelers will defer and divert trips depending on the type of trip. • Intercity trips • Intracity discretionary trips • Work trips • Commercial vehicle trips Likelihood of Diversion

  6. Traffic Flow Relationships Capacity = Max Flow Flow = Speed x Density Density = 1/Headway

  7. Urban speed and capacity reductions • Snowfalls & rainfalls of varying intensity • Reduced visibility • Head winds • Cold weather

  8. Safety

  9. Relative Crash Severity

  10. Safety Conclusions • Drivers learn to driver over the winter weather season • Winter weather crashes become more severe as: Urban Rural Lower Higher Classification Classification

  11. Current projects • Isolating crash hot spots • Winter safety audits • Measuring impacts of mitigation strategies

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