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Road weather models for increased traffic safety Torbjörn Gustavsson & Jörgen Bogren

Road weather models for increased traffic safety Torbjörn Gustavsson & Jörgen Bogren Road Climate Centre Göteborg University Sweden. Past 1983. Present The problem The possibility 2005. How RWIS-data is used today. -1,8°C. Is it necessary to perform any maintenance activity???. +10°C.

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Road weather models for increased traffic safety Torbjörn Gustavsson & Jörgen Bogren

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  1. Road weather models for increased traffic safety Torbjörn Gustavsson & Jörgen Bogren Road Climate Centre Göteborg University Sweden

  2. Past 1983 Present The problem The possibility 2005

  3. How RWIS-data is used today

  4. -1,8°C Is it necessary to perform any maintenance activity??? +10°C

  5. The problem • A lot of data is measured • 700 stations • several sensors • quality • representativity • Interpretation requires good knowledge and integration with other sources

  6. MDSS – maintenance decision support system • Information not data • -For road stretches • About road conditions • Overview or detail • Interpreted

  7. MDSS-summary Integrate information from different scales and sources in order to give information about the prevaling conditions and a forecast for the next hours

  8. Information to drivers • About road conditions • Speed limits in relation to severity • Snow • Ice • Rain • Fog • Wind

  9. Information to drivers INPUT PROCESSING OUTPUT • Weather model • Data from several RWIS-stations • Thermal mapping • Topoclimate 60 – 120 km/h

  10. Control measurements

  11. Frequency of alarms due to snow A0= 110 km/h: A1= 90km/h: A2= 80 km/h: A3=70 km/h: A4 =60 km/h

  12. Maintenance tool Maintenance decision support system Process data into information that helps optimizing decisions regarding activities Information to drivers Weather model Warnings and speed limit according to prevaling road conditions Best practices regarding RWIS-development

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