Pedestrian flow characteristics through bends: Effects of angle and desired speed

Jiahua Zhang; Charitha Dias; Majid Sarvi; Miho Iryo Asano

doi:10.17815/CD.2020.89

Pedestrian flow characteristics through bends: Effects of angle and desired speed

Authors

Jiahua Zhang Institute of Industrial Science, The University of Tokyo, Tokyo, Japan
Charitha Dias Institute of Industrial Science, The University of Tokyo, Tokyo, Japan
Majid Sarvi Department of Infrastructure Engineering, The University of Melbourne, Melbourne, Australia
Miho Iryo Asano Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan

DOI:

https://doi.org/10.17815/CD.2020.89

Keywords:

pedestrian flow, pedestrian turning behaviour, fundamental diagram, crowd experiment

Abstract

This study quantitatively described how the desired speed, which may reflect the emergency level, and the angle of bend affect the pedestrian flow by comparing fundamental diagrams derived from trajectory data collected through laboratory experiments. Results showed that the slow running (≈ 2.8 m/s speed) can increase the maximum flow through a bend by around 60 % compared to normal walking (≈ 1.4 m/s speed) regardless of the turning angle. Further, it was found that the turning angle of the bend has a stronger negative impact on the moving speed of crowds under running conditions. Compared to the turning angle, congestion level seemed to have a minor impact on the average moving speed through the bends. On the other hand, for 90° and 180° bends, the variations of the speed were observed to decrease with the increase of density which indicated that although congestion level deteriorated the flow conditions at bends, it homogenized the collective moving speed of pedestrians.

References

C. Dias, M. Sarvi, N. Shiwakoti, O. Ejtemai and M. Burd, "Examining the Impact of Different Turning Angles on the Collective Egress of Crowds", Journal of Transportation Safety & Security, vol. 6, no. 2, pp. 167-181, 2014.

C. Dias, M. Sarvi, O. Ejtemai and M. Burd, “Elevated desired speed and change in desired direction: effects on collective pedestrian flow characteristics”, Transp Res Rec, vol. 2490, pp. 65-75, 2015.

B. Steffen and A. Seyfried, "Methods for measuring pedestrian density, flow, speed and direction with minimal scatter", Physica A, vol. 389, no. 9, pp. 1902-1910, 2010.

J. Fruin, Pedestrian planning and design. New York: Metropolitan Association of Urban Designers and Environmental Planners, 1971.

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Published

12.08.2020

How to Cite

Zhang, J., Dias, C., Sarvi, M., & Asano, M. I. (2020). Pedestrian flow characteristics through bends: Effects of angle and desired speed. Collective Dynamics, 5, 522–524. https://doi.org/10.17815/CD.2020.89

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Issue

Vol. 5 (2020)

Section

Proceedings of Pedestrian and Evacuation Dynamics 2018

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