Towards Sustainable Urban Mobility: Voronoi-Based Spatial Analysis of EV Charging Stations in Bangkok

Sornkitja Boonprong, Nathapat Punturasan, Pariwate Varnakovida () and Wichien Prechathamwong
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Sornkitja Boonprong: Center for Graduate Studies and Special Program Management, Faculty of Social Sciences, Kasetsart University, Bangkok 10900, Thailand
Nathapat Punturasan: School of Engineering and Technology, Department of Information & Communication Technologies, Asian Institute of Technology, Pathum Thani 12120, Thailand
Pariwate Varnakovida: KMUTT Geospatial Engineering and Innovation Center, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
Wichien Prechathamwong: Department of Political Science, Faculty of Social Sciences, Kasetsart University, Bangkok 10900, Thailand

Sustainability, 2024, vol. 16, issue 11, 1-20

Abstract: This study leverages the efficacy of Voronoi diagram theory within a mixed-methods approach to thoroughly examine the spatial distribution, service coverage, and optimal locations for expanding electric vehicle (EV) charging infrastructure in Bangkok. Drawing on data from field surveys and public data providers, our analysis unfolds in four key stages. Firstly, we delve into the spatial distribution of charging stations, scrutinizing density, proximity to various road types, and land use through the lens of Voronoi diagrams. Secondly, the application of Voronoi diagrams informs the evaluation of service boundaries. Thirdly, utilizing this effective tool, we assess population density per parking slot or charging head to anticipate future EV adoption. Finally, the study introduces an approach to identify suitable locations for new charging stations through the application of overlapping Voronoi circles. Findings reveal a clustered distribution of charging stations along roads, particularly in the central business district, showcasing the efficiency of Voronoi diagrams in spatial analysis. Residential areas and urban commercial zones also host significant charging station concentrations. Notably, service coverage in inner Bangkok surpasses that of middle and outer areas, highlighting underserved regions. Prospective areas for new charging stations, identified through Voronoi analysis, include Bang Khae, Phra Khanong, Min Buri, and Huai Khwang. This research, rooted in the application of Voronoi diagram theory, offers vital insights for various stakeholders involved in urban infrastructure planning. By employing Voronoi diagrams within Geographic Information Systems (GIS), the study contributes to strategically placing charging stations, optimizing spatial understanding, and enhancing resource allocation. This GIS-based approach not only supports the rise of electric vehicles but also promotes sustainable urban development practices through the efficient utilization of spatial data and analysis techniques.

Keywords: Voronoi theory; electric vehicle charging stations; GIS (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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