Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/10545
Title: A generalised function for modeling bi-directional flow effects on indoor walkways in Hong Kong
Authors: Lam, WHK 
Lee, JYS
Chan, KS
Goh, PK
Keywords: Bi-directional flow effects
Walking speeds and maximum flow rates
Issue Date: 2003
Publisher: Pergamon Press
Source: Transportation research. Part A. Policy and practice, 2003, v. 37, no. 9, p. 789-810 How to cite?
Journal: Transportation research. Part A. Policy and practice 
Abstract: This paper examines the relationships between walking speed and pedestrian flow under various bi-directional flow conditions at indoor walkways in Hong Kong. The effects of bi-directional pedestrian flows are investigated empirically with particular emphasis on their effects on walking time for different directions of flow at pedestrian walkways in Hong Kong. Flow measurements were conducted at selected indoor walkways in urban areas. A generalized walking time function that takes bi-directional flow distributions (or flow ratios) into account is proposed for these pedestrian facilities and calibrated for various flow conditions ranging from free-flow to congested-flow (at-capacity) situations. The bi-directional flow effects on free-flow walking speed, effective capacity and at-capacity walking speed are validated with observed data. It was found that the bi-directional flow ratios have significant impacts on both the at-capacity walking speeds and the maximum flow rates of the selected walkways but not on the free-flow walking speeds. The findings and study methodology provide better insight into the effects of bi-directional pedestrian flow characteristics and will assist engineers/planners in improving the design and operation of pedestrian facilities not only in Hong Kong, but also in other countries as well.
URI: http://hdl.handle.net/10397/10545
ISSN: 0965-8564
DOI: 10.1016/S0965-8564(03)00058-2
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