Road weather models for increased traffic safety
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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

Road Climate Centre

Göteborg University

Sweden


Past

1983

Present The problem The possibility

2005



-1,8°C

Is it necessary to perform any maintenance activity???

+10°C


The problem
The problem

  • A lot of data is measured

    • 700 stations

    • several sensors

    • quality

    • representativity

  • Interpretation requires good knowledge and integration with other sources


MDSS – maintenance decision support system

  • Information not data

  • -For road stretches

  • About road conditions

  • Overview or detail

  • Interpreted


Mdss summary
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


Information to drivers
Information to drivers

  • About road conditions

  • Speed limits in relation to severity

    • Snow

    • Ice

    • Rain

    • Fog

    • Wind


Information to drivers1
Information to drivers

INPUT PROCESSING OUTPUT

  • Weather model

  • Data from several RWIS-stations

  • Thermal mapping

  • Topoclimate

60 – 120 km/h



Frequency of alarms due to snow
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


Best practices regarding rwis development

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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