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20 February 2024 Application of optimized BPR function in pedestrian evacuation
Xu Gong, Xiang Zhang, Wenqiang Qi, Xinyi Li, Yanhong Lei
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Proceedings Volume 13064, Seventh International Conference on Traffic Engineering and Transportation System (ICTETS 2023); 130642C (2024) https://doi.org/10.1117/12.3015889
Event: 7th International Conference on Traffic Engineering and Transportation System (ICTETS 2023), 2023, Dalian, China
Abstract
The BPR function is a type of road impedance function, as one of the impedance functions of road sections, is mainly used to allocate traffic according to the calculated impedance value, and decide the path selection in the allocation process. However, the model parameters of the traditional BPR function are derived from fitting a large amount of traffic flow data of intercity highways in the United States, which are not fully applicable to China. Considering the great similarity between traffic flow and pedestrian flow, the optimized BPR function can be applied to Barkhor Street in Lhasa to calculate the road impedance. In this paper, firstly, based on the pedestrian flow data of Barkhor Street, the Greenhill model and reduction coefficient method are adopted to optimize the BPR function, so that the model parameters suitable for Barkhor Street are obtained. Secondly, the optimized BPR function is used to evaluate the impedance of each road on Barkhor Street. Finally, a preliminary crowd evacuation plan is developed with the impedance as the evaluation index.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Xu Gong, Xiang Zhang, Wenqiang Qi, Xinyi Li, and Yanhong Lei "Application of optimized BPR function in pedestrian evacuation", Proc. SPIE 13064, Seventh International Conference on Traffic Engineering and Transportation System (ICTETS 2023), 130642C (20 February 2024); https://doi.org/10.1117/12.3015889
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KEYWORDS
Roads
Data modeling
Mathematical optimization
Mathematical modeling
Transportation
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