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Collision risk analysis based train collision early warning strategy

机译：基于碰撞风险分析的列车碰撞预警策略

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Train Collision Early Warning System (TCEWS) has been developed for collision avoidance. However, there are few studies regarding how to evaluate the collision risk and provide an early warning concerning a preceding train on the railway. In this paper, we have found that the time for collision avoidance is constrained by the timing of events, such as wireless communication latency, driver reaction, safety protection distance and deceleration rate. Considering these timing components, the time to avoid a collision is calculated accurately. To evaluate the potential collision severity when the following train approaches, the collision risk is defined based on the time to avoid a collision. The train collision early warning signal is divided into a four-tier color-coded system based on the collision risk, with red representing the most severe collision risk, followed by orange, yellow and blue. A field test of the train collision early warning strategy on the Hankou Yichang Railway is analysed. It is demonstrated that the strategy has sufficient capability to indicate a potential collision and warn the following train.
机译：列车碰撞预警系统（TCEWS）已开发用于避免碰撞。但是，关于如何评估碰撞风险并提供有关铁路上前一列火车的预警的研究很少。在本文中，我们发现避免碰撞的时间受事件的时间限制，例如无线通信延迟，驾驶员反应，安全保护距离和减速率。考虑这些定时成分，可以准确地计算出避免碰撞的时间。为了评估后续列车接近时的潜在碰撞严重性，基于避免碰撞的时间来定义碰撞风险。列车碰撞预警信号根据碰撞风险分为四级彩色编码系统，红色代表最严重的碰撞风险，其次是橙色，黄色和蓝色。对汉口宜昌铁路列车相撞预警策略进行了现场测试。实践证明，该策略具有足够的能力来指示潜在的碰撞并警告随后的火车。

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