[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()

高原地区公路平曲线运行速度模型

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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

高原地区公路平曲线运行速度模型

Author(s):

Wang Chenzhu^{1, 2}, Chen Fei^{1, 2}, Xu Wensheng³, Wu Yutao^{1, 2}, Zhang Yunlong^{1, 4}, Bo Wu^{1, 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

王晨竹^{1, 2}, 陈飞^{1, 2}, 徐文胜³, 吴雨涛^{1, 2}, 张云龙^{1, 4}, 薄雾^{1, 5}, 张平⁵

¹ 东南大学交通学院, 南京 211189; ²东南大学道路交通工程国家级实验教学示范中心, 南京 211189; ³ 中国港湾工程有限责任公司, 北京 100027; ⁴ Zachry Department of Civil Environmental Engineering, Texas A& M University 3136 TAMU, College Station, USA; ⁵

Keywords:

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

高原地区;  运行速度;  逐步回归法;  预测模型

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.

为研究高原地区恶劣环境对于高原车辆运行速度的影响, 基于实测的实际车速数据, 建立了更具代表性的运行速度预测模型.首先, 利用Bushnell手持式雷达速度计10-1911CN在拉林高速公路和318国道上分别对平曲线起点、中心点及终点处实际运行车辆的速度特性进行观测.其次, 采用逐步回归方法确定显著性参数, 分别提出拉林高速公路和318国道上小车和大车的运行速度预测模型.最后, 通过保留测试组数据验证了模型的有效性和实用性.基于数据验证成果, 与传统的预测方法相比, 所建立模型的预测结果更为精准, 并能更深入地对预测运行速度与显著参数之间的非线性关系进行检验.该研究为高原地区公路其他路段的运行速度预测研究提供了思路及依据.

References:

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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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