空气污染阻碍了公交导向型城市的发展:研究韩国首尔颗粒物浓度与公共交通乘客和道路交通的关系

IF 2 4区 工程技术 Q3 TRANSPORTATION
Seung-Nam Kim , Sunwoo Jung , Youngha Joo , Hyungkyoo Kim
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引用次数: 0

摘要

在易受空气污染影响的高密度大都市地区,当空气质量较差时,公共交通可能不太受欢迎,因为在使用过程中很难避免接触室外空气。通过应用看似无关的回归模型,我们研究了颗粒物(PM)与公共交通乘客人数的关系,以及作为共享车辆交通需求的替代方案,2015 年至 2018 年首尔私家车道路交通量的关系。为了控制与星期等季节性因素相关的乘客量和道路交通量的波动,我们使用了转化为残差形式的九期移动平均值。结果显示,较高的 PM 浓度不仅与公交乘客人数呈负相关,还与道路交通量和拥堵程度呈负相关;然而,地铁乘客人数的减少幅度大于道路交通量的减少幅度。这表明:(1) 当可吸入颗粒物浓度严重时,人们可以减少总体出行,而不是将出行方式从公共交通改为私家车,从而意味着两种出行方式在应对空气污染方面是互补而非替代的;(2) 公共交通似乎仍然比私家车更容易受到空气污染的影响。这些发现有助于我们了解空气污染对公共交通使用的不利影响,以及更好地预测和应对恶劣大气条件下的公共交通需求,从而为可持续交通规划提供未来的政策方向。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Air pollution hindering a transit-oriented city: Examining the association of particulate matter concentration with public transit ridership and road traffic in Seoul, South Korea
In high-density metropolitan areas prone to air pollution, public transit may be less preferred when air quality is poor due to the difficulty of avoiding outdoor air exposure during their use. By applying seemingly unrelated regression models, we examined the association of particulate matter (PM) with both public transit ridership and, as an alternative to sharing vehicular traffic demands, private car road traffic in Seoul from 2015 to 2018. To control for fluctuations in ridership and road traffic associated with seasonalities such as the day of the week, we used nine-term moving averages transformed into residual form. Results show that higher PM concentration was negatively associated with not only transit ridership, but also road traffic volume and congestion level; yet, the reduction in subway ridership was found to be larger than that in road traffic. This suggests that (1) when PM concentration is severe, people could reduce overall travel rather than change travel modes from public transit to private cars, thus implying that both modes are complementary rather than substitutionary in terms of responding to air pollution; and (2) public transit still seems more susceptible to air pollution than private cars. The findings help us understand the adverse effects of air pollution on public transit use as well as better predict and respond to demand for public transit in poor atmospheric conditions, thereby providing future policy directions for sustainable transportation planning.
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来源期刊
CiteScore
6.40
自引率
0.00%
发文量
29
审稿时长
26 days
期刊介绍: The Journal of Public Transportation, affiliated with the Center for Urban Transportation Research, is an international peer-reviewed open access journal focused on various forms of public transportation. It publishes original research from diverse academic disciplines, including engineering, economics, planning, and policy, emphasizing innovative solutions to transportation challenges. Content covers mobility services available to the general public, such as line-based services and shared fleets, offering insights beneficial to passengers, agencies, service providers, and communities.
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