NDLI: Dynamic platoon dispersion model based on real-time link travel time

Content Provider	IET Digital Library
Author	Yao, Zhihong Xu, Taorang Cheng, Yang Qin, Lingqiao Jiang, Yangsheng Ran, Bin
Abstract	Adaptive signal control system aims to improve the operation efficiency of intersections, in which the platoon dispersion model is one of the key component modules. The problem of the traditional Robertson's model is that they are based on historical data, which cannot effectively capture the dynamic characteristics of traffic flow and be further applied to adaptive signal control systems. Thanks to the unprecedented availability of real-time travel time data provided by the modern intelligent transportation systems, there is an opportunity to calibrate Robertson's model online using real-time travel time data. This study proposes a dynamic Robertson's platoon dispersion model based on real-time travel times. Then, based on field observations, the prediction error and computational efficiency of the traditional Robertson's model, the Gaussian model, and the proposed model are compared and analysed. The results show that the proposed model can better capture the law of dynamic dispersion for traffic flow. The reduced average mean square error of prediction can be as much as 16.86 and 7.07% compared with the traditional Robertson's model and the Gaussian model, respectively. In addition, the average computational time of the proposed model is 0.46 s, which can be applied in the dynamic predictive signal control systems.
Starting Page	1694
Ending Page	1700
Page Count	7
ISSN	1751956X
Volume Number	13
e-ISSN	17519578
Issue Number	Issue 11, Nov (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-its/13/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-its.2019.0098
Journal	IET Intelligent Transport Systems
Publisher Date	2019-07-12
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Signal Control System Average Computational Time Dynamic Characteristic Dynamic Dispersion Dynamic Platoon Dispersion Model Dynamic Predictive Signal Control System Dynamic Robertson's Platoon Dispersion Model Gaussian Model Gaussian Processes Modern Intelligent Transportation System Real-time Link Travel Time Real-time Travel Time Data Real-time Travel Times Road Traffic Road Traffic System Control Road Vehicle Statistics Time 0.46 S Traditional Robertson's Model Traffic Flow Vehicle-to-vehicle Communication
Content Type	Text
Resource Type	Article
Subject	Law Transportation Environmental Science Mechanical Engineering

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