Impacts of high-intensity storms on urban transportation: applying traffic flow control methodologies for quantifying the effects

  • E. Mitsakis
  • I. Stamos
  • M. Diakakis
  • J. M. Salanova Grau
Original Paper


Urban flooding is becoming increasingly destructive in the Mediterranean region as more and more urban infrastructure and socioeconomic activities are exposed to flood risk. The metropolitan area of Athens, Greece, is no exception to this flood-prone regime, presenting a rich record of flood events during the last century. On February 22, 2013, a high-intensity storm that lasted 7 h hit Athens, severely impacting the transportation sector, hindering vehicle circulation and the overall performance of the road network. This paper studies the impacts of high-intensity storms in urban areas by examining the effects of the February 2013 Athens storm and the resultant flood event. Its novelty lies in the impacts quantification approach, applying cutting-edge traffic flow control methodologies in the form of macroscopic fundamental diagrams. It quantifies the storm’s impacts on vehicular traffic in terms of operational disruptions during the event, by analyzing various traffic-related indicators, such as travel time, delays, speed drop and re-routing of vehicles, using data from the Athens traffic management center and urban freight vehicle fleets. Results show increased travel times, significant changes in routing and substantial speed drops, highlighting the disruptive effects of the flooding event on traffic. The importance of developing a qualitative and quantitative understanding of the effects of such events in urban areas is particularly high, considering the context of the changing climate and the increasing frequency and intensity of extreme weather events.


Flooding Urban transportation Urban freight transport Climate change Extreme weather events Traffic flow control 



The work presented herein has been supported by the 7th Framework Program of the European Commission (FP7) under the MOWE-IT project. The authors would like to thank the Greek Fire Service for providing the emergency call data.


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Copyright information

© Islamic Azad University (IAU) 2014

Authors and Affiliations

  • E. Mitsakis
    • 1
  • I. Stamos
    • 1
  • M. Diakakis
    • 2
  • J. M. Salanova Grau
    • 1
  1. 1.Centre for Research and Technology HellasHellenic Institute of TransportThermi, ThessaloníkiGreece
  2. 2.Faculty of Geology and Geo-EnvironmentNational and Kapodistrian University of AthensAthensGreece

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