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 language | English |
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| Title of host publication | Proceedings of the 17th International Conference of Hong Kong Society for Transportation Studies, HKSTS 2012 |
| Subtitle of host publication | Transportation and Logistics Management |
| Pages | 333-339 |
| Number of pages | 7 |
| Publication status | Published - 1 Dec 2012 |
| Event | 17th International Conference of Hong Kong Society for Transportation Studies: Transportation and Logistics Management, HKSTS 2012 - Kowloon, Hong Kong Duration: 15 Dec 2012 → 17 Dec 2012 |
Conference
| Conference | 17th International Conference of Hong Kong Society for Transportation Studies: Transportation and Logistics Management, HKSTS 2012 |
|---|---|
| Country/Territory | Hong Kong |
| City | Kowloon |
| Period | 15/12/12 → 17/12/12 |
Keywords
- GIS
- Rainfall intensity
- Spatial and temporal analysis
- Thessien polygon
- Traffic accidents
ASJC Scopus subject areas
- Transportation
