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Research on Safety Level of Service at Urban Tunnel Convergence Section

机译：城市隧道汇聚段服务安全水平研究

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摘要

We propose a method of using safety level of service to evaluate the traffic safety of convergence sections between the entrances and exits of two urban tunnels. The conflict probability index is established by the conflict circle method. Time to crash (TTC) is treated as an index for measuring the severity of conflict. The probability of crash is established by integrating the conflict probability and conflict severity. The collision severity index is established according to the kinetic energy conversion relationship. Finally, the overall safety evaluation model of the road section is established. The safety index threshold is determined and the safety level of service is classified using an engineering example. This provides the theoretical guidance for traffic safety evaluation and improvement of the urban tunnel convergence section in the last section.
机译：我们提出了一种利用服务水平的安全性来评估两条城市隧道出入口之间会合段交通安全的方法。冲突概率指数是通过冲突圆法建立的。崩溃时间（TTC）被视为衡量冲突严重性的指标。崩溃概率是通过将冲突概率和冲突严重性相结合来确定的。根据动能转换关系建立碰撞严重性指标。最后，建立了路段的整体安全评价模型。确定安全指标阈值，并使用工程示例对服务的安全级别进行分类。这为最后一部分中的交通安全评估和城市隧道收敛部分的改进提供了理论指导。

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