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Detecting Signals of Bottleneck Activation for Freeway Operations and Control

机译：检测高速公路运行和控制的瓶颈激活信号

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Any application of intelligent transportation systems (ITS) to freeway operations and control relies on understanding the behavior of freeway bottlenecks. By improving our understanding of the formation and dissipation of queues at active freeway bottlenecks (points characterized by the presence of queued traffic immediately upstream and unqueued traffic immediately downstream) we can improve the techniques used to manage freeway traffic—one of the hallmarks of ITS. It is shown that freeway bottlenecks' activations can be diagnosed definitively using archived inductive loop detector data (measured at 20- or 30-sec intervals) from two sites in Toronto, Canada. Once the bottlenecks' locations and times of activation were determined, potential signals of their activations were explored. It is shown that certain potential signals were evident immediately before upstream queue formation, and that these were reproducible from day to day (over three or four days examined) at the two sites studied. As a result, it is suggested that these signals be used for systematic investigation of bottleneck behavior in either real time or in retrospect, on a more widespread basis as part of a real-time ITS control system.
机译：智能交通系统（ITS）在高速公路运营和控制中的任何应用都依赖于了解高速公路瓶颈的行为。通过提高对活动高速公路瓶颈处队列的形成和消散的理解（这些点的特征是紧接上游存在排队的交通和紧接下游存在未排队的交通），我们可以改善用于管理高速公路交通的技术，这是ITS的标志之一。结果表明，可以使用加拿大多伦多两个地点的归档感应环路检测器数据（以20或30秒的间隔测量）来最终诊断高速公路瓶颈的激活。一旦确定了瓶颈的位置和激活时间，就可以探索其激活的潜在信号。结果表明，某些潜在信号在上游队列形成之前就很明显，并且在所研究的两个地点每天（在检查的三，四天之内）都可以重现。结果，建议将这些信号作为实时ITS控制系统的一部分，在更广泛的基础上用于实时或回顾性地系统研究瓶颈行为。

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