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Frontiers of Engineering Management

ISSN 2095-7513

ISSN 2096-0255(Online)

CN 10-1205/N

Postal Subscription Code 80-905

Front. Eng    2024, Vol. 11 Issue (1) : 92-106    https://doi.org/10.1007/s42524-023-0285-x
A dynamic speed guidance method at on-ramp merging areas of urban expressway considering driving styles
Haoran LI1, Yunpeng LU2, Yaqiu LI3, Junyi ZHANG4()
1. School of Automobile and Traffic Engineering, Wuhan University of Science and Technology, Wuhan 430065, China; Suzhou Automotive Research Institute, Tsinghua University, Suzhou 215134, China
2. School of Automobile and Traffic Engineering, Wuhan University of Science and Technology, Wuhan 430065, China
3. School of Transportation, Southeast University, Nanjing 211189, China; Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi Hiroshima 739-8529, Japan
4. School of Transportation, Southeast University, Nanjing 211189, China
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Abstract

Dynamic speed guidance for vehicles in on-ramp merging zones is instrumental in alleviating traffic congestion on urban expressways. To enhance compliance with recommended speeds, the development of a dynamic speed-guidance mechanism that accounts for heterogeneity in human driving styles is pivotal. Utilizing intelligent connected technologies that provide real-time vehicular data in these merging locales, this study proposes such a guidance system. Initially, we integrate a multi-agent consensus algorithm into a multi-vehicle framework operating on both the mainline and the ramp, thereby facilitating harmonized speed and spacing strategies. Subsequently, we conduct an analysis of the behavioral traits inherent to drivers of varied styles to refine speed planning in a more efficient and reliable manner. Lastly, we investigate a closed-loop feedback approach for speed guidance that incorporates the driver’s execution rate, thereby enabling dynamic recalibration of advised speeds and ensuring fluid vehicular integration into the mainline. Empirical results substantiate that a dynamic speed guidance system incorporating driving styles offers effective support for human drivers in seamless mainline merging.

Keywords driving styles      speed guidance      driving safety assistance      on-ramp merging     
Corresponding Author(s): Junyi ZHANG   
Just Accepted Date: 24 January 2024   Online First Date: 27 February 2024    Issue Date: 13 March 2024
 Cite this article:   
Haoran LI,Yunpeng LU,Yaqiu LI, et al. A dynamic speed guidance method at on-ramp merging areas of urban expressway considering driving styles[J]. Front. Eng, 2024, 11(1): 92-106.
 URL:  
https://academic.hep.com.cn/fem/EN/10.1007/s42524-023-0285-x
https://academic.hep.com.cn/fem/EN/Y2024/V11/I1/92
Fig.1  Framework of the speed guidance system.
Fig.2  Predecessor-leader following.
Fig.3  The position of the 9 vehicles at merging area.
Fig.4  The speed of the 9 vehicles at merging area.
Fig.5  The acceleration of the 9 vehicles at merging area.
Fig.6  The closed-loop feedback vehicle speed guidance system.
Fig.7  Speed tracking of the model based on trigonometric function.
Fig.8  Variable step size closed-loop feedback speed tracking.
Fig.9  Driving distance of vehicle tracking under two speed guidances.
Fig.10  Local magnification of driving distance.
Fig.11  The curve of closed-loop feedback speed with step size of 2 s.
Fig.12  The curve of closed-loop feedback speed with step size of 3 s.
Fig.13  The curve of closed-loop feedback speed with step size of 4 s.
Fig.14  Driving distance of vehicle tracking under fixed step size and variable step size.
Fig.15  Speed tracking error when Kp = 5.
Fig.16  Speed tracking error when Kp = 10.
Fig.17  Speed tracking error when Kp = 20.
Fig.18  Speed guidance results of different driving styles.
Fig.19  Driving distance results of different driving styles.
Fig.20  Local magnification of driving distance.
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