Opening the use case
- To access the use case, click the “See this case live on DUET” button below. The Digital Twin loads the map of Athens centered in Kallimarmaro Stadium.
- Then, you need to log in
- Reopen the use case – https://platform.citytwin.eu/app/map?caseId=373
In the upper menu “Contect”-> “Data” you can navigate in the available datasets. By default the “athens_terrain” and “traffic_athens” are already displayed. No extra layers are necessarry for this case.
Partially closing a street
You partially reduce the traffic of a street, namely reduce by a percentage or reduce the capaticy of vehicles in order e.g. to transform a lane in a bicycle route or apply measures of reduces mobility and explore the results.
In the upper left menu at the option “Analysis”. Select a road segment where you want to simulate the reduction of traffic, for example the road in front of Kallimarmaro Stadium.
Choose “change traffic flow for this road segment(s) by” and add in the road segment capacity 25%. Then select “integrate traffic model results only” and “Start analysis”.
The DUET model now starts calculating the new situation and a blue messages pops up. Please wait 2-3 min for the re-calculation.
Results of the simulation
The result can be found in the “Data” section of the main menu, in the tab “traffic model results.” Activate the layer by clicking the plus symbol in case the results are not activated already.
By clicking the “content” button, the overview of all data layers is added on the left side. Now you can switch on/off layers as you like to investigate your simulation in detail.
To see the effect of the changes on traffic, a delta layer is calculated. You can experiment by activating/deactivating the layers.
By clicking on the “i” in each layer you can monitor the explanation of the results. On the delta layer the difference in traffic is annotated by color as: minor increase, decrease etc.
You can repeat the simulation to correlate with air and noise pollution in the area by choosing “integrate air model results only” or “integrate noise model results only” accordingly.
OpenStreetMap – Athens traffic – Athens terrain – air athens – noise athens
Traffic model, terrain, air pollution model, noise pollution model