About Us
MobilityTwin.Brussels is an open research project from the CoDE lab at Université libre de Bruxelles, making Brussels' mobility data accessible to researchers, developers, and the public.
The Project
MobilityTwin.Brussels is a unified platform that aggregates, historizes, and serves mobility data from across the Brussels-Capital Region. It collects data from dozens of sources, including public transport operators, traffic sensors, bike-sharing systems, and air quality monitors, then exposes them through a single, well-documented REST API.
The project was initiated in 2022 as part of academic research at ULB and has since grown into a production platform used by researchers and developers alike. It was presented at ACM SIGSPATIAL '23 and continues to evolve with new data sources, an MCP integration for AI agents, and a growing community of users.
Team
Gaspard Merten
Co-Founder
Initiated the project as a master's student at ULB's Polytechnic School, designing the original architecture and data pipeline. Now a researcher at the CoDE lab, he continues to lead the development and maintenance of the platform.
gaspard.merten@ulb.be
Mahmoud Sakr
Co-Founder
Professor at ULB and co-founder of MobilityDB, the open-source moving object database extension for PostgreSQL. He supervises the research direction of the project, bringing deep expertise in spatiotemporal data management.
mahmoud.sakr@ulb.be& Contributors
Many others have contributed along the way: students, researchers, and open-source developers.
Publications & Links
Data-Driven Digital Mobility Twins
M. Sakr
Brussels Mobility Twin
G. Merten, M. Sakr
Experimental Probing of Graph Convolutional Neural Networks Architectures for Traffic Analysis
B. Salehi, M. Sakr
Estimating Urban Traffic Using Public Transit Buses as Probes
B. Salehi, M. Sakr
GitHub Repository
Open-source codebase for the MobilityTwin.Brussels platform. Contributions are welcome!
MobilityDB
The open-source moving object database extension for PostgreSQL that powers the spatiotemporal engine behind the platform.
CoDE Lab at ULB
The Computer & Decision Engineering (CoDE) department at the Université libre de Bruxelles is part of the Brussels School of Engineering (formerly École polytechnique). The lab conducts research in databases, data engineering, geospatial systems, AI, and decision support. It is home to several internationally recognized projects, including MobilityDB and MobilityTwin.Brussels.
The department brings together professors, postdoctoral researchers, PhD students, and master's students working on real-world data challenges, with a strong emphasis on open-source software and open data.
Visit code.ulb.ac.be