3D Visualization and standardized Representation of the Lane-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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The picture shows a street scene based on the 3D model, which includes the results of the traffic simulation in the form of 3D models of road users for the Sonnenstrasse.

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

As part of the Digital Twin Munich project, a lane-model is developed and visualized with the aim of providing a comprehensive and precise representation of the street space with lane-level accuracy and including traffic logic. This model is based on extensive survey data and existing geospatial information. The lane-model includes individual driving lanes, bicycle paths, nearby vegetation, road markings, and areas used by pedestrians. This data is converted into the international standard CityGML, which is used to represent semantic 3D city and street space models. The lane-model can therefore be used for environmental simulations and analyses, as well as interactive 3D visualizations. The associated modelling guide, Road2CityGML3, is based on insights gained from the Digital Twin Munich project.

Contribution to the digitization of municipal transport systems

The standardized representation of the street space, including geometric, semantic, topological, and visual aspects, contributes to the digitization of the municipal transportation system. Simulation, analysis, and visualization tools require detailed, and ideally standardized, input data to perform their tasks. This is ensured through the use of international standards.

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

Digital 3D models of the street space enable numerous environmental simulations and analyses. Customized mobility concepts, such as replacing driving lanes with bicycle paths, have an impact on traffic flow as well as air quality. Digital simulations and visualizations of various scenarios allow for the assessment of the respective effects of measures before their actual implementation, thereby helping to make informed decisions for the future of the city.

Perspective of the action

The ongoing development of the lane-model seeks to offer detailed information about Munich's street space throughout the entire city, ensuring lane-level accuracy. This information will be made available through an interactive 3D Cesium visualization. Additionally, dynamic sensor data and real-time information, such as traffic congestion, will be integrated into these visualizations.

Videos

CityGML-compliant 3D street space model of Sonnenstraße with visualized traffic simulation results

Beitrag auf YouTube ansehen

CityGML-compliant 3D street space model in the area of the Frankfurter Ring with visualized traffic simulation results

Beitrag auf YouTube ansehen

Visualization of a shadow casting simulation with the help of the 3D model of the Sonnenstraße

Beitrag auf YouTube ansehen

Galerie

Overview of the 3D model of the Sonnenstraße, which can be used to representing traffic data and is embedded here in a city-wide 3D model.

Representation of the 3D model for the visualization traffic data in the Sonnenstraße embedded in a city-wide 3D model.

Four views showing the 3D model for the Sonnenstrasse from different perspectives. With this model, the output of semantic information of the lane-model and visualizations of the traffic simulation based on the lane-model are possible.

3D visualizations of traffic simulation based on the Lane-Model for the Sonnenstraße.

2D representation of the lane areas of the lane-model, which provide the basis for semantic information such as the assignment of the street name. Highlighted is a lane area outside the intersection area in the Sonnenstraße, for which a clear assignment of the street name is possible.

Representation of lane-exact traffic areas with intersection areas of the lane-model, which allows an unambiguous assignment of the street name, since they do not belong to an intersection area.

2D representation of the intersection areas and intermediate sections of the lane-model, which is the basis for the semantic information such as the assignment of the street name.

Comparison of intersection areas and intermediate sections of the lane-model on Sonnenstraße and as result, a potential overlap in street name assignments.

Representation of a traffic area with overlapping information on the street name as a 2D map and in an attribute table.

Overlapping street name information in the semantic 3D city model in intersection areas in the Sonnenstraße.

Explicit assignment of the street name for roadway sections in the semantic 3D city model in the Sonnenstraße.

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.

Indicator-based Analysis based on the 3D City Model

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

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.