Chapter
Jul 2, 2019
Research on the Traffic State Threshold of Saturated Flow in Eight-Lane Expressway Merging Area
Authors: Yi Li [email protected], Xiucheng Guo [email protected], Li Lin [email protected], Jiayan Shen [email protected], and Yang Bai [email protected]Author Affiliations
Publication: CICTP 2019
Abstract
This paper aims to analyze the threshold of saturated flow of each lane in an eight-lane expressway merging area under different situations. The concept of saturated is defined firstly and the three-dimensional fundamental diagram which determines the flow, speed, and density thresholds for each lane in the merging area is plotted. Meanwhile, a cellular automaton model is established and validated considering the actual measured data. Results show that the cellular automaton model is effective and the impact of length of acceleration lane, randomization probability, percentage of large vehicles, and number of lanes would change the saturated flow threshold of each lane respectively.
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Published In
CICTP 2019
Pages: 2611 - 2622
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Jul 2, 2019
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Authors
Affiliations
Jiangsu Key Laboratory of Urban ITS, Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies, School of Transportation, Southeast Univ., Nanjing 211189, P.R. China. E-mail: [email protected]
School of Transportation, Southeast Univ., Nanjing 211189, P.R. China. E-mail: [email protected]
Shanghai City Comprehensive Transportation Planning Technology Consulting Co. Ltd., Shanghai 200040, P.R. China. E-mail: [email protected]
School of Transportation, Southeast Univ., Nanjing 211189, P.R. China. E-mail: [email protected]
School of Transportation, Southeast Univ., Nanjing 211189, P.R. China. E-mail: [email protected]
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