Dashboards
The two dashboards, created on ArcGIS Online, display the hot zones of overall traffic crashes and bus-involved crashes of 9 three-year periods, from 1995 to 2021.
The hot zone methodology was developed by the research team of Professor Becky P.Y. Loo since 2009[1-2]. The hot zones of overall traffic crashes are generated using 100 meters as the length of basic spatial units (BSUs) and 7 crashes as the threshold, while the hot zones of bus-involved crashes use a threshold of 3 bus-involved crashes. More than one contiguous BSUs exceeding the minimum threshold are identified as hot zones.
Through maps, indicators, charts, and lists, the two dashboards present comprehensive statistics and insights that enable users to explore the spatial distribution and characteristics of hot zones across Hong Kong. To access the two dashboards, please refer to the following links:
We welcome users from both the community and the public to use. When using these dashboards, please cite properly in any form of publication.
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Lian, T., & Loo, B. P. Y. (2025). Hot zones of overall crashes in Hong Kong (1995-2021) [Interactive dashboard]. ArcGIS Dashboards.
Lian, T., & Loo, B. P. Y. (2025). Hot zones of bus-involved crashes in Hong Kong (1995-2021) [Interactive dashboard]. ArcGIS Dashboards.
You can also download the flyer here.
If you have any inquires or suggestions, feel free to contact bpyloo@hku.hk.
[1] Loo, B. P. Y. (2009). The Identification of Hazardous Road Locations: A Comparison of the Black Site and Hot Zone Methodologies in Hong Kong. International Journal of Sustainable Transportation, 3, pp.187-202.
[2] Grubenmann, T., Tsoi, K. H. and Loo, B. P. Y. (2019) Hotzone Generation Add-in for ArcGIS. Available at http://arcg.is/1T0bKv