*2.3. Translating Flood Hazards into Tra*ffi*c Models*

To simulate the impacts of flooding within the traffic network the relationship between maximum allowable speeds of vehicles with respect to flood-depths is required. Previous work by Pyatkova et al. [12,13] discretised flood hazards via the relationship of maximum permitted speed limits along road sections with respect to flood depths along those sections. Table 5 shows the discrete ranges for the flood depths, their hazard classification and the subsequent speed reductions along the road sections where these flood depths are present.


Through an intersect analysis, analyzing the depths of water on road surfaces, we modify the input parameters (speed limit) of links within the traffic model. Figure 10 shows an example of the links affected by flooding within Barcelona when analyzing maximum flood-depths of a 1 in 10 year BAU climate change scenario.

**Figure 10.** Example of hazard classification for a 1 in 10 Year Future Climate Change Scenario Event.
