@article{ref1,
title="Pedestrian dynamics at the running of the bulls evidence an inaccessible region in the fundamental diagram",
journal="Proceedings of the National Academy of Sciences of the United States of America",
year="2021",
author="Parisi, Daniel R. and Sartorio, Alan G. and Colonnello, Joaquín R. and Garcimartín, Angel and Pugnaloni, Luis A. and Zuriguel, Iker",
volume="118",
number="50",
pages="e2107827118-e2107827118",
abstract="We characterize the dynamics of runners in the famous &quot;Running of the Bulls&quot; Festival by computing the individual and global velocities and densities, as well as the crowd pressure. In contrast with all previously studied pedestrian systems, we unveil a unique regime in which speed increases with density that can be understood in terms of a time-dependent desired velocity of the runners. Also, we discover the existence of an inaccessible region in the speed-density state diagram that is explained by falls of runners. With all these ingredients, we propose a generalization of the pedestrian fundamental diagram for a scenario in which people with different desired speeds coexist.<p /> <p>Language: en</p>",
language="en",
issn="0027-8424",
doi="10.1073/pnas.2107827118",
url="http://dx.doi.org/10.1073/pnas.2107827118"
}