Festival of Lights in Lyon

The Festival of Lights in Lyon is an open-air event attracting each year nearly two million visitors over four days. As part of the MADRAS project, we are collecting videos of crowded scenes during the Festival of Lights. We have identified crowded places from previous festivals where complex dynamics of dense pedestrian flows are to be expected. The crowds are filmed from a top view using selected surveillance cameras of the city of Lyon and cameras installed for the MADRAS project on the balconies of pre-identified apartments.

The aim is to extract pedestrian dynamics measurements such as visitor trajectories or aggregated measures of crowd density, flow, or average speed. These data are intended to calibrate and test the pedestrian models and algorithms developed in the framework of the MADRAS project. Selected scenes of the Festival of Lights are also used as reference scenarios for numerical simulations. The collection of crowd videos is done in the strict respect of the privacy and personal data protection of the filmed visitors. The videos are processed anonymously, without distinguishing the filmed persons by any criteria. All pedestrian dynamics data (as well as the models and simulation software) will be publicly available at the end of the project.




Figure: Four places in Lyon where problems happened during the Festival of Lights 2021.


Figure: Emplacement of the cameras for the video recording during the Festival of Lights 2022.




The data collection is done in agreement and cooperation with the technical organisers of the Festival of Lights, whom we gratefully acknowledge, as well as the city of Lyon. Further information about the data collection are available here: