Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/29385
Title: Temporal and spatial impacts of rainfall intensity on traffic accidents in Hong Kong
Authors: Li, D
Li, X
Lam, WHK 
Keywords: GIS
Rainfall intensity
Spatial and temporal analysis
Thessien polygon
Traffic accidents
Issue Date: 2012
Source: Proceedings of the 17th International Conference of Hong Kong Society for Transportation Studies, HKSTS 2012: Transportation and Logistics Management, 2012, p. 333-339 How to cite?
Abstract: This study investigates the temporal and spatial impacts of rainfall intensity on traffic accidents in Hong Kong. In this study, the geographic information system (GIS) technique is used to correlate rainfall data with accidents data in Hong Kong from 2009 to 2010 with particular attention on the times and locations of traffic accidents. A GIS-based Thessien polygon approach is adopted to consider the impact of spatial distribution of rainfall gauge stations on rainfall intensity estimation at the traffic accident locations. A matched-pair method is used to study the temporal relationship between rainfall intensity estimates and accidents. The results indicate that the first hour of rain and the first hour after rain are the accident-prone periods. In addition, increase in the traffic accident counts during hourly time periods with average rainfall intensity from 5.1 to 10 mm per hour is higher than that during periods with other ranges of rainfall intensity.
Description: 17th International Conference of Hong Kong Society for Transportation Studies: Transportation and Logistics Management, HKSTS 2012, Kowloon, 15-17 December 2012
URI: http://hdl.handle.net/10397/29385
ISBN: 9789881581419
Appears in Collections:Conference Paper

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