城市快速路实时脆弱性分析

IF 3.3 3区 工程技术 Q2 TRANSPORTATION
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引用次数: 0

摘要

本研究提出了一种评估单位时间内路网脆弱性的新方法:实时脆弱性指数(RVI)。通过使用上海高速公路的经验数据,研究了所提措施在实际交通场景中的实际应用。为防止交通拥堵,建议采用 RVI 临界值(RVI*)进行交通管制。此外,还进一步分析了交通状态相变过程中宏观基本图(MFD)和 RVI 的滞后性。结果表明,RVI 可以帮助实时推导出一些有代表性的交通特征,动态反映路网的脆弱性:当路网发生交通拥堵或事故时,MFD 和 RVI 上的交通滞后观察结果是一致的,RVI 更容易观察,更适合交通管理。研究结果证明,RVI 是帮助预测路网动态运行的可靠指标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Real-time Vulnerability Analysis of Urban Expressway
This study proposes a new method for evaluating the road network vulnerability per unit time: the real-time vulnerability index (RVI). The practical application of the proposed measure in real traffic scenarios is investigated by using empirical data from Shanghai Expressway.To prevent traffic congestion, a critical threshold of RVI (RVI*) is suggested for traffic control. Furthermore, the hysteresis on macroscopic fundamental diagram (MFD) and RVI is further analyzed in the phase transition of traffic states. The results show that RVI can help derive some representative traffic characteristics in real time and dynamically reflect road network vulnerability: when traffic congestion or accidents occur on the road network, the results observed for the traffic hysteresis on MFD and RVI were consistent, and RVI is easier to observe and more suitable for traffic management. The findings prove that RVI is a reliable indicator to help predict the dynamic operation of the road network.
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来源期刊
CiteScore
6.40
自引率
14.30%
发文量
79
审稿时长
>12 weeks
期刊介绍: Transportation Letters: The International Journal of Transportation Research is a quarterly journal that publishes high-quality peer-reviewed and mini-review papers as well as technical notes and book reviews on the state-of-the-art in transportation research. The focus of Transportation Letters is on analytical and empirical findings, methodological papers, and theoretical and conceptual insights across all areas of research. Review resource papers that merge descriptions of the state-of-the-art with innovative and new methodological, theoretical, and conceptual insights spanning all areas of transportation research are invited and of particular interest.
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