Indicator-based Analysis based on the 3D City Model

Result of the project Digital Twin Munich as part of the funding guideline "Digitalization of Municipal Transport Systems" by the Federal Ministry of Transport and Digital Infrastructure.

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Indicators derived from the Digital Twin Munich allow the evaluation and comparison of “what-if scenarios”.

The datasets of an urban digital twin provide an ideal basis for calculating urban indicators that allow continuous monitoring of the city and evaluation and comparison of planning scenarios. As part of the Digital Twin Munich, a concept for indicator modeling was developed and implemented for evaluations in the transport sector. In addition to 3D visualizations quantitative indicators can be made available to support planning and participation processes. This approach was tested for the “Vision Boulevard Sonnenstraße” among other test areas. Examples of indicators are areal comparison of different mobility spaces and a quality assessment of bicycle paths. Thanks to a standardized data structure, these can be derived automatically for the current state and for any planned scenario.

Contribution to the digitalization of municipal transport systems

The automated calculation of indicators for the traffic sector enables knowledge driven traffic planning and controlling over long time periods. Examples implemented in the Digital Twin Munich include the quality assessment of bicycle paths. This approach provides a digital knowledge base by evaluating the current condition and supports the decision-making process for planned bicycle paths.

Contribution to air pollution control / clean air in the City of Munich

Indicators for the traffic sector can be used to optimize infrastructure for cyclists. The indicator values for “Vision Boulevard Sonnenstraße” substantiate a prioritization of this type of mobility. An attractive bicycle infrastructure has a motivating effect and promotes switching from motorized individual transport to the bicycle and thus contributing to reduction of air pollution.

Perspective of the action

The international standard for 3D city models CityGML was considered for the development of these indicators. This approach makes it simple to transfer the calculation methods to other cities. For Munich modeling, calculating and visualizing urban indicators based on an urban digital twin is continuing in the funded projects Connected Urban Twins and ASCEND and transferred to other European cities.

Galerie

Presentation of the categories for the service quality of cycle paths in a 3D city model of the Boschetsriederstraße.

The service quality of cycle paths, derived from the current existing data in the Boschetsriederstraße.

2D map representations of the automatically generated indicators for cycle path width for the existing situation and the

Comparison of the automatically generated indicators for bicycle path width for the existing situation and the "Vision Boulevard Sonnenstraße and Herzog-Willhelm-Park" for a section of the Sonnenstraße.

Screenshot of a dashboard for the output of the indicator-based analysis of the area balances for the existing situation and the

Dashboard for the output of the indicator-based analysis of the area balances for the existing situation and the "Vision Boulevard Sonnenstraße and Herzog-Willhelm-Park".

Screenshot of a dashboard for the output of the indicator-based analysis of cycle path widths for the existing situation and the

Dashboard for the output of the indicator-based analysis of the bicycle path width for the existing situation and the "Vision Boulevard Sonnenstraße and Herzog-Willhelm-Park".

Explanation of the method for deriving indicators based on a semantic 3D city model, considering cycle path width, gradient and adjacent traffic areas, enabling out assessment of the cycle path service quality according to a standardized evaluation system.

Method for service quality evaluation of bicycle paths according to a standardized evaluation system from a semantic 3D city model.

Visualization method for evaluating the service quality of cycle paths according to a standardized evaluation system within the 3D city model. Categories for the cycle path service quality (A to F) and presentation of the result for a section of the implementation project of the

Evaluation result of the service quality of bicycle paths according to a standardized evaluation system for a section of the implementation project of the "Decision by the Munich City Council to improve the bicycle infrastructure in the Boschetsriederstraße".

Dashboards

Other Results

Public Participation with the 3D City Model

Enhancing citizen participation by visualizing future scenarios using the 3D city model of the Digital Twin Munich.

3D Visualization and Standardized Representation of the Lane-Model

The standardized 3D modelling of roads and the street space enables its use for numerous applications and visualizations.

Sendlinger Tor Platz: View of combined 3D city model.

Semanticized 3D mesh model

Derivation of a semantic 3D city model from the photorealistic mesh model.

Mobile Mapping and Feature Extraction

The Digital Twin Munich uses panoramic images and inventories to support the city administration.

Interactive construction sites map in the Munich GeoPortal

See all construction sites and temporary traffic disruptions online at one glance.

City-wide lane model: lane-exact representation of the road space

The lane model contains the entire road system of Munich in a simulation-enabled data structure.

Development of a city-wide network for control points

In order to integrate road traffic into the digital twin, high-precision measurement control points are required.

The Digital Twin Munich in Minecraft

Including the Digital Twin Munich as part of the Minecraft game provides a great opportunity to involve young people in participation and planning processes.

Modeling of Traffic-Related Air Pollution

The combination of multiple data sources enables the modeling of traffic-related air pollution.

Drone flights to survey and update the Digital Twin Munich

Drone-based data collection is suitable for capturing temporary and shot term or structural changes within the city and updating the city-wide data of the Digital Twin Munich.

Mapping Bike – area-specific update of the streetscape and supporting for drone flights

The concept of the mapping bike was developed in collaboration with the Technical University of Munich (TUM) to record changes in road construction and to complement drone-based data collection.

On display is a holistic 2D data integration for optimizing urban planning processes for transport infrastructure in Plexmap.

An innovative geodata exchange platform

The geodata exchange platform is the agile sub-project platform of the Digital Twin Munich and uses Plexmap for holistic 2D and 3D data integration to optimize urban planning processes.

With the help of augmented reality (AR), future construction projects are projected into today's reality

Experience today what will be built tomorrow. With AR, future construction projects can easily and directly on site be superimposed and displayed together in today’s realit

Dashboard overview with selection options for various sensor values.

Geodashboards within the Digital Twin Munich

Geodashboards support informed decision making by visualizing complex geodata from the Digital Twin Munich.

Co-creation for the Digital Twin Munich

The Digital Twin Munich project is an excellent illustration of how visionary ideas and interdisciplinary collaboration positively impact urban development.