[1] Wang Chenzhu, Chen Fei, Xu Wensheng, et al. Operating speed models for curved segmentsof highways in plateau regions [J]. Journal of Southeast University (English Edition), 2022, 38 (1): 85-91. [doi:10.3969/j.issn.1003-7985.2022.01.013]

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Operating speed models for curved segmentsof highways in plateau regions()

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

Volumn:

38

Issue:

2022 1

Page:

85-91

Research Field:

Traffic and Transportation Engineering

Publishing date:

2022-03-20

Info

Title:

Operating speed models for curved segmentsof highways in plateau regions

Author(s):

Wang Chenzhu¹;  2;  Chen Fei¹;  2;  Xu Wensheng³;  Wu Yutao¹;  2;  Zhang Yunlong¹;  4;  Bo Wu¹;  5;  Zhang Ping⁵

¹School of Transportation, Southeast University, Nanjing 211189, China
²National Experimental Teaching Demonstration Center of Road Traffic Engineering, Southeast University, Nanjing 211189, China
³China Harbour En

Keywords:

plateau areas;  operating speed;  stepwise regression method;  prediction model

PACS:

U412.34

DOI:

10.3969/j.issn.1003-7985.2022.01.013

Abstract:

To examine the influence of the harsh environment in plateau areas on the operating speed of vehicles, advanced speed prediction models for curved segments are established based on observed actual speed data. First, the speed characteristics at the starting, mid, and end points of a plane curve were observed on Lalin Highway and China National Highway 318 with Bushnell’s handheld radar speedometer 10-1911CN. Second, the stepwise regression method was proposed to determine the significant parameters and propose the prediction models of the operating speed of cars and large vehicles for the two highways. Finally, reserved test group data were utilized to prove the validity and practicality of the proposed models. Compared with traditional methods, the established models can produce more accurate prediction results and deeply examine the nonlinear relationships between parameters and the predicted operating speed. This study provides a considerate direction and basis for the operating speed prediction model for other segments in plateau regions.

References:

[1] Zhou G M, Liu R L, Xu X, et al. Effects of plateau environment on power performance of vehicles and measures to improve power performance in plateau[J]. Equipment Environmental Engineering, 2014, 11(3): 45-51, 75. DOI:10.7643/issn.1672-9242.2014.03.010. (in Chinese)
[2] Hu L W, Xue G, Li L Y, et al. Analysis of coupling of highway traffic risks in geological and meteorological environment of plateau regions[J]. China Journal of Highway and Transport, 2018, 31(1): 110-119. DOI:10.19721/j.cnki.1001-7372.2018.01.013. (in Chinese)
[3] Zhu Z D. Research on operating speed of two-lane highways based on environment [D]. Beijing: Beijing University of Technology, 2011.(in Chinese)
[4] Ministry of Transport of People’s Republic of China. Specifications for highway safety audit: JTG B05—2015[S]. Beijing: People’s Communications Publishing House, 2016.(in Chinese)
[5] Zhang Z L. Research of two-lane highway alignment design method based on the operating speed [D]. Chongqing: Chongqing Jiaotong University, 2010.(in Chinese)
[6] Xu J L, Lei T, Jia X L, et al. Maximal gradient of highway in high-altitude area based on typical truck’s climbing performance[J].Journal of Tongji University(Natural Science), 2017, 45(6): 854-860. DOI:10.11908/j.issn.0253-374x.2017.06.010. (in Chinese)
[7] Yu L X. Combustion and emission characteristics of heavy diesel engines at different altitudes [D]. Beijing: Beijing Institute of Technology, 2014.(in Chinese)
[8] Raichle M E. Food for thought: Altitude versus normal brain function[M]. New York: Springer US, 1999.
[9] Shallam R D K, Ahmed M A. Operating speed models on horizontal curves for two-lane highways[J]. Transportation Research Procedia, 2016, 17: 445-451. DOI:10.1016/j.trpro.2016.11.086.
[10] Al-Masaeid H R, Hamed M, Aboul-Ela M, et al. Consistency of horizontal alignment for different vehicle classes[J]. Transportation Research Record, 1995, 1500: 178-183.
[11] Ministry of Transport of People’s Republic of China. Technical standard of highway engineering: JTG/B01—2014[S]. Beijing: People’s Communications Publishing House, 2014.(in Chinese)
[12] Duan Z H, Xu J L, Ru H, et al. Classification of driving fatigue in high-altitude areas[J]. Sustainability, 2019, 11(3): 817. DOI:10.3390/su11030817.

Memo

Memo:

Biographies: Wang Chenzhu(1990—), male, Ph.D. candidate; Chen Fei(corresponding author), male, doctor, professor, cf@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No. 51768063, 51868068).
Citation: Wang Chenzhu, Chen Fei, Xu Wensheng, et al.Operating speed models for curved segments of highways in plateau regions[J].Journal of Southeast University(English Edition), 2022, 38(1):85-91.DOI:10.3969/j.issn.1003-7985.2022.01.013.

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