Development and Application of Traffic Accident Density Estimation Models Using Kernel Density Estimation
Traffic accident frequency has been decreasing in Japan in recent years. Nevertheless, many accidents still occur on residential roads. Area-wide traffic calming measures including Zone 30, which discourages traffic by setting a speed limit of 30 km/h in residential areas, have been implemented. However, no objective implementation method has been established. Development of a model for traffic accident density estimation explained by GIS data can enable the determination of dangerous areas objectively and easily, indicating where area-wide traffic calming can be implemented preferentially. This study examined the relations between traffic accidents and city characteristics, such as population, road factors, and spatial factors. A model was developed to estimate traffic accident density. Kernel density estimation (KDE) techniques were used to assess the relations efficiently. Besides, 16 models were developed by combining accident locations, accident types, and data types. By using them, the applicability of traffic accident density estimation models was examined. Results obtained using Spearman rank correlation show high coefficients between the predicted number and the actual number. The model can indicate the relative accident risk in cities. Results of this study can be used for objective determination of areas where area-wide traffic calming can be implemented preferentially, even if sufficient traffic accident data are not available.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/20957564
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Supplemental Notes:
- © 2016 Periodical Offices of Chang'an University. Abstract reprinted with permission of Elsevier.
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Authors:
- Hashimoto, Seiji
- Yoshiki, Syuji
- Saeki, Ryoko
- Mimura, Yasuhiro
- Ando, Ryosuke
- Nanba, Shutaro
- Publication Date: 2016-6
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: pp 262-270
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Serial:
- Journal of Traffic and Transportation Engineering (English Edition)
- Volume: 3
- Issue Number: 3
- Publisher: Elsevier
- ISSN: 2095-7564
- Serial URL: http://www.journals.elsevier.com/journal-of-traffic-and-transportation-engineering-english-edition
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Publication flags:
Open Access (libre)
Subject/Index Terms
- TRT Terms: Crash causes; Crash risk forecasting; Density; High risk locations; Mathematical models; Urban areas
- Geographic Terms: Okayama (Japan); Toyota City (Japan)
- Subject Areas: Data and Information Technology; Highways; Safety and Human Factors;
Filing Info
- Accession Number: 01602905
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 28 2016 4:16PM