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Empirical study on social groups in pedestrian evacuation dynamics

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  • von Krüchten, Cornelia
  • Schadschneider, Andreas

Abstract

Pedestrian crowds often include social groups, i.e. pedestrians that walk together because of social relationships. They show characteristic configurations and influence the dynamics of the entire crowd. In order to investigate the impact of social groups on evacuations we performed an empirical study with pupils. Several evacuation runs with groups of different sizes and different interactions were performed. New group parameters are introduced which allow to describe the dynamics of the groups and the configuration of the group members quantitatively. The analysis shows a possible decrease of evacuation times for large groups due to self-ordering effects. Social groups can be approximated as ellipses that orientate along their direction of motion. Furthermore, explicitly cooperative behaviour among group members leads to a stronger aggregation of group members and an intermittent way of evacuation.

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  • von Krüchten, Cornelia & Schadschneider, Andreas, 2017. "Empirical study on social groups in pedestrian evacuation dynamics," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 475(C), pages 129-141.
    • Handle: RePEc:eee:phsmap:v:475:y:2017:i:c:p:129-141
    DOI: 10.1016/j.physa.2017.02.004
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    References listed on IDEAS

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    1. Steffen, B. & Seyfried, A., 2010. "Methods for measuring pedestrian density, flow, speed and direction with minimal scatter," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 389(9), pages 1902-1910.
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    6. Rozan, E.A. & Frank, G.A. & Cornes, F.E. & Sticco, I.M. & Dorso, C.O., 2022. "Microscopic dynamics of escaping groups through an exit and a corridor," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 597(C).
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    10. Feng, Jiaojiao & Wang, Jinghong & Li, Jia & Li, Jiachen & Xu, Shuangyan & Liu, Juan & Li, Jiapeng & Wang, Yan, 2022. "Study on the law of vertical evacuation behavior during earthquakes considering social relationship," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 586(C).
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    12. Haghani, Milad & Sarvi, Majid, 2018. "Crowd behaviour and motion: Empirical methods," Transportation Research Part B: Methodological, Elsevier, vol. 107(C), pages 253-294.
    13. Sobhana, Karthika P. & Choubey, Nipun & Verma, Ashish, 2023. "Modelling and simulating the leader–follower behaviour of pedestrians in unidirectional flow," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 623(C).
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