Smart road construction, renewable energy, climate change
Examination of the superimposed federal state flood hazard maps over the federal trunk road network based on remote sensing data and archive information (3317000)
The federal states in Germany have among other things prepared flood hazard maps against the background of transposing the European Floods Directive into German law. Based on the data provided by the federal states, BASt has superimposed the flood hazard maps over the federal trunk road network in a geographic information system (GIS) to obtain information about especially vulnerable areas of the federal trunk road network. This research project focuses on the question of the extent to which the superimposing of the flood hazard maps over the federal trunk road network is suitable for use as a national foundation for a risk analysis of the federal trunk road network. This assessment is initially to be based on an empirical approach. During the research project there will be a spatial comparison of the vulnerable areas indicated by the superimposing exercise with areas that have actually flooded during past flood incidents. Remote sensing data and archive data will be used for the comparison.
Heat indicator climate impact analysis (3317001)
The RIVA tool is to be further developed into a comprehensive climate impact analysis tool for the road traffic system. Indicators for climate impact analysis are to be defined accordingly for the external impact parameters, including climate and extreme weather events. Within the course of the project, an indicator for estimating damage to asphalt pavements caused by heat is to be developed as an input variable for the climate impact analysis. This indicator enables the existing RIVA method to be further developed into a climate impact analysis tool. The climate impact analysis tool can provide road construction planners with information to assess the impact of climate-related influences of the road traffic infrastructure.
Network of experts: climate change (3316002)
The project addresses the following questions amongst others. Which climatic changes are relevant to traffic and infrastructure in Germany? Which climate scenarios do we need to consider? How vulnerable are traffic and infrastructure to climatic changes and extreme weather events? Which sections in the transport network could be weak points? Which options, measures and procedures are available to safeguard and enhance resilience in the entire transport system? How do the combined effects of climate change and other anthropogenic changes impact traffic and infrastructure? What does this mean for the maintenance, planning and construction of infrastructures? How can we make reliable climate forecasts for planning periods of 10 to 30 years alongside long-term climate projections and use them in the planning instruments and in the maintenance and renewal of the transport network?
Networking and communication of the research programme "Adaptation of road traffic infrastructure to climate change" (AdSVIS) (89.281)
The "Adaptation of road traffic infrastructure to climate change" (AdSVIS) programme is becoming increasingly important both in the national and international context. Existing research findings are intensively debated in various committees and working groups and – based on this – intermodal strategies and roadmaps at the national and European level as well as recommendations for action are drawn up. As part of the research programme, various research consortia are currently independently working on 14 sub-projects. In order to both efficiently structure the handling of all the projects and secure the reliability of the research findings, it has proven expedient to internally network the AdSVIS research programme. Furthermore, the results of the projects have to discussed – and partly coordinated – in an international context, in order to maintain the road transport flow within Europe. The aim here is the integration of the findings into an adaptation strategy for road transport, the networking of the research programme with international research partners of the BASt as well as the linking to EU initiatives, the networking with other initiatives, such as from other areas of transport for the purpose of implementing the "German adaptation strategy to climate change" (DAS), as well as the communication of the results and recommendations to action of the AdSVIS programme to various national and international committees.
Modelling of Temperature Gradients in Concrete Road Constructions (3312002)
Climate researchers are anticipating considerable climate changed in the coming decades. The German Meteorological Office continuously records meteorological data including the temperatures at ground level, whilst the road construction authorities record road surface temperatures by using ice warning systems. The frost dimensioning was updated in 2008. This means that the surface temperatures and the maximum frost penetration depths which are to be anticipated at federal highways are known. Exact information on how the temperatures are distributed in road constructions is not known for certain at the moment. This is of great relevance for the analysing of the long-term behaviour however. 25 percent of the German federal highways have concrete surfaces. An influence model is to be developed in the scope of the project which can be used to calculate the temperature gradients on the basis of data from weather stations, construction and material identifiers in addition to all of the relevant information concerning the environment. This influence model is validated with the results of a German-wide temperature monitoring on concrete road constructions. This results in a backed-up influence model which will supply important input data for the dimensioning of the concrete construction designs. On the basis of this, the model provides the possibility of computing the temperature gradients on the basis of the most diverse climate scenarios.