Temporal and spatial impacts of rainfall intensity on traffic accidents in Hong Kong

Depeng Li, Xiangmin Li, Hing Keung William Lam

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

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.
Original languageEnglish
Title of host publicationProceedings of the 17th International Conference of Hong Kong Society for Transportation Studies, HKSTS 2012
Subtitle of host publicationTransportation and Logistics Management
Pages333-339
Number of pages7
Publication statusPublished - 1 Dec 2012
Event17th International Conference of Hong Kong Society for Transportation Studies: Transportation and Logistics Management, HKSTS 2012 - Kowloon, Hong Kong
Duration: 15 Dec 201217 Dec 2012

Conference

Conference17th International Conference of Hong Kong Society for Transportation Studies: Transportation and Logistics Management, HKSTS 2012
CountryHong Kong
CityKowloon
Period15/12/1217/12/12

Keywords

  • GIS
  • Rainfall intensity
  • Spatial and temporal analysis
  • Thessien polygon
  • Traffic accidents

ASJC Scopus subject areas

  • Transportation

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