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• W2897530503 abstract "In this paper, the movement properties of pedestrians under limited visibility are investigated by a group of single-file experiments. Three light transmissions (0.3%, 0.1% and 0.0%) are set and trajectories of individuals are extracted by using tracking algorithm. From the analysis of experimental video, typical behavior of following the boundary and frontal pedestrian are observed under poor visibility. Velocity distribution in different experiment runs conforms to Gaussian distribution. Two regimes are found in the headway–velocity relation and the time-space diagram reveals the evolution of pedestrian traffic with the decrease of visibility. Fundamental diagrams are obtained through the proposed measurement method and three regions can be found in the density-flow relation. The maximum specific flow under the light transmission of 0.3%, 0.1% and 0.0% is 1.3 s−1, 1.15 s−1 and 0.9 s−1 respectively. Finally log transformation for density and velocity is performed to study the elastic effect of density change on velocity change. It is found that pedestrians are more sensitive to the density change under good visibility. This study is helpful to understand pedestrian movement characteristics under different visibilities, which is of practical importance for pedestrian safety under emergency condition. Furthermore, the valuable data obtained from the experiment can be used for model validation and verification in the future." @default.
• W2897530503 created "2018-10-26" @default.
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• W2897530503 date "2019-04-01" @default.
• W2897530503 modified "2023-10-16" @default.
• W2897530503 title "Dynamic analysis of pedestrian movement in single-file experiment under limited visibility" @default.
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• W2897530503 doi "https://doi.org/10.1016/j.cnsns.2018.10.007" @default.
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