Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14474
Title: Simulating pedestrian movements at signalized crosswalks in Hong Kong
Authors: Lee, JYS
Lam, WHK 
Keywords: Bi-directional pedestrian flow effects
Mean walking time
Pedestrian average delay
Standard deviation and signalized crosswalk
Issue Date: 2008
Publisher: Pergamon Press
Source: Transportation research. Part A. Policy and practice, 2008, v. 42, no. 10, p. 1314-1325 How to cite?
Journal: Transportation research. Part A. Policy and practice 
Abstract: This paper presents a new pedestrian simulation (PS) model for signalized crosswalks in Hong Kong. This PS model is capable of estimating the variations of walking speed particularly on the effects of bi-directional pedestrian flows so as to determine the minimum required duration of pedestrian crossing time. Video records taken from the observational surveys at the selected crosswalk in urban area were used to extract the required data for model calibration. It was found that the design walking speed for signalized crosswalks should be varied by the effects of the bi-directional pedestrian flows. It was also interesting to note that the negative impact of the bi-directional flow effects (ranging from uni-directional to bi-directional pedestrian flows) on the chance of pedestrian crossing the crosswalk is increasing from free-flow to at-capacity flow conditions. The new PS model is also validated using an independent data set so as to examine the reliability of the simulation results. The validation results show that the new PS model can provide an accurate evaluation on the changes of walking speed and its standard deviation under different scenarios with particular emphasis on the effects of the bi-directional pedestrian flows. The advancement of this PS model can be applied to assess the effects of each improvement measure and to evaluate the benefits of each scenario in practice.
URI: http://hdl.handle.net/10397/14474
ISSN: 0965-8564
DOI: 10.1016/j.tra.2008.06.009
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