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Retrofitting existing road infrastructure
Road infrastructure is exposed to different climate impacts, e.g. heat, high precipitation and flooding. Extreme heat but also a greater temperature variability will put a larger strain on road pavements, leading to cracks, rot occurence or pavement blow-ups. These pose additional risks to transport users. New constructin materials can be used to cope with these effects and to make pavement more heat resistant (e.g. new, heat-resistant paving materials, more common use of polymer-modified bitumen, improvement in pavement technology, using polymeric grids to avoid rutting, using materials on the surface which reflect solar radiation). Damages from flash floods and extreme precipitation events can be avoided through proper and scheduled maintenance of drainage. In some regions, where intensive precipitations are likely to increase, an upgrading of drainage should be considered.
Data source Author Country Climate risks considered Methodological approach
Adaptation Measures in the EU: Policies, Costs, and Economic Assessment. Altvater, S. et al Europe Heatwave, Flooding

Cost-benefit analyses for heat-resistant asphalt and retrofitting existing road infrastructure concerning increased precipitation (improved drainage system)

Kosten und Nutzen von Anpassungsmaßnahmen an den Klimawandel: Analyse von 28 Anpassungsmaßnahme in Deutschland. (Costs and benefits of climate adaptation measures. Analysis of 28 adaptation measures in Germany) Tröltzsch, J. et al Germany Flooding, Heatwave

Cost-benefit analyses for heat-resistant road cover and adapted drainage systems

Kosten und Nutzen von Anpassungsmassnahmen an den Klimawandel: Analyse von 28 Anpassungsmassnahmen in Deutschland (Costs and benefits of adaptation measures: Analysis of 28 adaptation measures in Germany) Tröltzsch, J., Görlach, B., Lückge, H., Peter, M., Sartorius, C. Germany Heatwave

Cost-benefit assessment of heat-resistent asphalt