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The KDE+ software: a tool for effective identification and ranking of animal-vehicle collision hotspots along networks

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Abstract

Context

Objective identification of locations on transportation networks, where animal-vehicle collisions (AVC) occur more frequently than expected (hotspots), is an important step for the effective application of mitigation measures.

Objectives

We introduce the KDE+ software which is a programmed version of the KDE+ method for effective identification of traffic accident hotspots. The software can be used in order to analyze animal-vehicle collision data.

Methods

The KDE+ method is based on principles of Kernel Density Estimation (KDE). The symbol ‘+’ indicates that the method allows for the objective selection of significant clusters and for the ranking of the hotspots. It is also simultaneously applicable to an unlimited number of road segments.

Results

We applied the KDE+ method to the entire Czech road network. The hotspots were ranked according to their significance. The resulting hotspots represent a short overall road length which should require a more detailed assessment in the field. The 100 most important clusters of AVC represent, for example, only 19.7 km of the entire road network (37,469 km).

Conclusions

We present an objective method for hotspots identification which can be used for AVC data. This method is unique because it determines the significance level of hotspots in an objective way. The prioritization of hotspots allows a transportation manager to effectively allocate resources to a feasible number of identified hotspots. We describe the software, data preparation and present the KDE+ application to AVC data.

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Acknowledgments

This work was financed by the Transport R&D Centre (OP R&D for Innovation No. CZ.1.05/2.1.00/03.0064). We would like to thank Andreas Seiler and the anonymous reviewer whose comments substantially increased the quality and lucidity of the text. We would also like to thank Jan Tecl for his help with information on accuracy of traffic-accidents data from around the world.

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Authors and Affiliations

  1. CDV Transport Research Centre, Líšeňská 33a, 636 00, Brno, Czech Republic

    Michal Bíl, Richard Andrášik, Tomáš Svoboda & Jiří Sedoník

Authors
  1. Michal Bíl
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  2. Richard Andrášik
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  3. Tomáš Svoboda
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  4. Jiří Sedoník
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Correspondence to Michal Bíl.

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Bíl, M., Andrášik, R., Svoboda, T. et al. The KDE+ software: a tool for effective identification and ranking of animal-vehicle collision hotspots along networks. Landscape Ecol 31, 231–237 (2016). https://doi.org/10.1007/s10980-015-0265-6

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  • DOI: https://doi.org/10.1007/s10980-015-0265-6

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