Chun Uibeom, Lim Joonbeom, Lee Soobeom, Park Shinhyoung
Department of Transportation Engineering, University of Seoul, Seoul, 02504, Korea.
Department of Mobility Policy Research, Korea Transportation Safety Authority, Gimcheon-Si, 39660, Korea.
Sci Rep. 2023 Dec 9;13(1):21812. doi: 10.1038/s41598-023-49143-9.
Bicycles are an eco-friendly mode of transportation, and in the capital city of South Korea, Seoul, efforts are being made to encourage citizens to use bicycles. However, without appropriate safety measures, these efforts can lead to an increase in bicycle-related traffic accidents. To promote bicycle usage while ensuring safety, this study identified various factors that influence bicycle accidents. Data were utilized that had not been properly considered in previous bicycle accident-related studies, including slope and the level of public transportation services. By considering the factors influencing bicycle traffic accidents, various models were constructed, and through comparisons of statistical indicators, the optimal model was selected geographically weighted negative binomial regression. Ultimately, three significant conclusions to ensure bicycle safety were drawn. First, across all areas of Seoul, an increase in road slope leads to a decrease in bicycle-related accidents. Furthermore, for certain Traffic Analysis Zones (TAZs), as the number of local buses (or neighborhood/community buses) increases, the bicycle traffic volume decreases, resulting in a reduction in bicycle accidents. Lastly, for some TAZs, an increase in bicycle lanes to be installed into the roadway was associated with an increase in bicycle accidents.
自行车是一种环保的交通方式，在韩国首都首尔，人们正在努力鼓励市民使用自行车。然而，如果没有适当的安全措施，这些努力可能会导致与自行车相关的交通事故增加。为了在确保安全的同时促进自行车的使用，本研究确定了影响自行车事故的各种因素。研究使用了以往与自行车事故相关的研究中未得到适当考虑的数据，包括坡度和公共交通服务水平。通过考虑影响自行车交通事故的因素，构建了各种模型，并通过统计指标的比较，选择了地理加权负二项回归的最优模型。最终得出了确保自行车安全的三个重要结论。首先，在首尔的所有区域，道路坡度的增加会导致与自行车相关的事故减少。此外，对于某些交通分析区（TAZ），随着当地公交车（或邻里/社区公交车）数量的增加，自行车交通量会减少，从而导致自行车事故减少。最后，对于一些TAZ，道路上计划安装的自行车道增加与自行车事故增加有关。
