[1] Chen Yongheng, Wu Changjian, Wang Xin, Li Wanning, et al. Control method for intersections downstreamof urban expressway off-ramp using pre-signals [J]. Journal of Southeast University (English Edition), 2023, 39 (1): 8-16. [doi:10.3969/j.issn.1003-7985.2023.01.002]

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Control method for intersections downstreamof urban expressway off-ramp using pre-signals()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

39

Issue:

2023 1

Page:

8-16

Research Field:

Traffic and Transportation Engineering

Publishing date:

2023-03-20

Info

Title:

Control method for intersections downstreamof urban expressway off-ramp using pre-signals

Author(s):

Chen Yongheng¹;  Wu Changjian²;  Wang Xin³;  Li Wanning⁴;  Li Haonan¹

¹College of Traffic and Transportation, Jilin University, Changchun 130022, China
²School of Transportation, Southeast University, Nanjing 211189, China
³College of Air Traffic Management, Civil Aviation University of China, Tianjin 300300, China
⁴Changchun Urban Planning and Research Center, Changchun 130028, China

Keywords:

traffic engineering;  off-ramp;  pre-signal;  connected intersection;  traffic shockwave theory

PACS:

U491.3

DOI:

10.3969/j.issn.1003-7985.2023.01.002

Abstract:

To improve the traffic efficiency of the urban expressway off-ramp and connected downstream intersection, a pre-signal control method for intersections downstream of the urban expressway off-ramp was proposed. Based on the analysis of the flow distribution characteristics of an off-ramp ground point section, a vehicle lane change delay model in an off-ramp junction area is constructed. Using the traffic shockwave theory, a pre-signal upstream queue length model and sorting area length model are established. Considering the constraints of the main signal timings and queue length constraints, pre-signal timing parameters and pre-signal setting position are optimized. The results of a case study show that the pre-signal method can significantly improve the capacity of the intersection with an off-ramp and significantly reduce the average vehicle delay. The effects of the left-turn traffic proportion, traffic volume, and ramp junction length on the model are studied through numerical analysis. The results demonstrate the effectiveness and advantage of the pre-signal method.

References:

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Memo

Memo:

Biography: Chen Yongheng(1978—), male, doctor, professor, cyh@jlu.edu.cn.
Foundation items: National Key R&D Program of China(No. 2019YFB1600501), Scientific and Technological Developing Project of Jilin Province(No. 20190201107JC).
Citation: Chen Yongheng, Wu Changjian, Wang Xin, et al.Control method for intersections downstream of urban expressway off-ramp using pre-signals[J].Journal of Southeast University(English Edition), 2023, 39(1):8-16.DOI:10.3969/j.issn.1003-7985.2023.01.002.

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