Generalized Delay Model for Signalized Intersections and Arterial Streets
Generalized Delay Model for Signalized Intersections and Arterial Streets
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DOI：
10.3141/1572-14
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发表时间：
1997
影响因子：
1.7
通讯作者：
D. Fambro;N. Rouphail
中科院分区：
文献类型：
--
作者：
D. Fambro;N. Rouphail
每辆车的平均延误是确定信号交叉口服务水平的主要衡量标准。该性能指标也是计算平均行驶速度的主要组成部分，用于确定主干道的服务水平。最广泛使用的估计信号交叉口延误的模型是《公路容量手册》第 9 章（“信号交叉口”）和第 11 章（“城市和郊区干道”）中的模型。本研究回顾了有关估计信号交叉口延误的模型的文献，以确定其局限性并制定修订模型来解决这些局限性。解决的具体问题包括无法考虑驱动控制参数、过饱和和可变需求，以及上游交通信号的计量和过滤。研究团队开发了一个广义延迟模型来解决这些限制，然后用现场和模拟数据验证了广义模型。所提出的模型对驱动控制参数设置、过饱和和可变需求条件以及上游信号的过滤和计量效应敏感。所提出的模型还可以很好地预测现场观察到的延误，并通过针对所研究条件的微观交通模拟程序进行估计。建议将广义延误模型纳入未来版本的公路容量手册中。
Average delay per vehicle is the primary measure for determining the level of service at signalized intersections. This performance measure is also a major component in the calculation of average travel speed used to determine the level of service on arterial streets. The most widely used models for estimating delay at signalized intersections are those in Chapters 9 ("Signalized Intersections") and 11 ("Urban and Suburban Arterials") of the Highway Capacity Manual. This research reviewed the literature on models for estimating delay at signalized intersections to identify limitations and formulate revised models to address those limitations. Specific problems that were addressed included the inability to account for actuated-control parameters, oversaturation and variable demand, and metering and filtering by upstream traffic signals. The research team developed a generalized delay model to address these limitations and then validated the generalized model with both field and simulation data. The proposed model is sensitive to actuated-control parameter settings, oversaturation and variable demand conditions, and filtering and metering effects of upstream signals. The proposed model is also a good predictor of delays observed in the field and estimated by microscopic traffic simulation programs for the conditions studied. The generalized delay model is recommended for inclusion in future editions of the Highway Capacity Manual.