Abstract
This paper presents a microscopic analysis of factors influencing pedestrian movement and interactions with their surroundings for two considered modes: independent movement influenced only by the surrounding conditions and synchronized movement based on following another pedestrian. This study analyses which of these effects prevail in different phases of the movement. The results show that the significant value of correlation between pedestrian velocity and corresponding individual density is observed mainly during approaching the crowd. Contrarily, in the segment of pedestrian trajectory which corresponds to movement inside the crowd, correlation between the velocity of a follower and a leader is more important. This confirms that the pedestrian behaviour in a crowd is a complex field.
Highlights
The prediction of a pedestrian’s velocity is one of the most crucial tasks for evacuation and egress modelling
While approaching and joining the crowd, velocity of any pedestrian is strongly related to their individual density – significant negative correlation is observed in Fig. 2, Left, where curves are plotted at the normalized time ttNN
Follower-leader concept The studied crowd at the exit area has an internal structure similar to a multi-row chaotic queue; the pedestrian standing behind someone else often just copies the movement of a predecessor
Summary
The prediction of a pedestrian’s velocity is one of the most crucial tasks for evacuation and egress modelling. To [2], the Pearson correlation coefficient RR ρρωωαα, vvαα is used to measure the strength of a pedestrian’s α reaction expressed by their velocity vvαα to their surroundings described by an individual density ρρωωαα . 2. Pedestrian velocity, individual density and correlation The velocity of a pedestrian is calculated as usual using central differences of space coordinates.
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